Tilapia in the HMI library has 286 reported results for lead, cadmium, total arsenic, inorganic arsenic, total mercury, methylmercury, mercury, nickel, chromium, uranium, Cu, Fe, Mn, Zn, Se, Ba, mercury (Hg) and Mg from 24 sources.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →2FY2018-FY2020 TDS Elements Analytical ResultsFDA Total Diet StudyRead source →3Toxic metals and metalloids in collagen supplements of fish and jellyfish origin: Risk assessment for daily intakeOpen MedicineRead source →4The concentration, source and potential human health risk of heavy metals in the commonly consumed foods in BangladeshEcotoxicology and Environmental SafetyRead source →5Toxic Heavy Metals and Their Risk Assessment of Exposure in Selected Freshwater and Marine Fish in ThailandFoods 2023, 12, 3967Read source →6Heavy Metals Assessment and Health Risk to Consumers of Two Commercial Fish Species from Polyculture Fishponds in El-Sharkia and Kafr El-Sheikh, Egypt: Physiological and Biochemical StudyBiological Trace Element ResearchRead source →
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Metals measured:
Lead, cadmium, total arsenic, inorganic arsenic, total mercury and methylmercury and others, in 286 results from 24 sources.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →2FY2018-FY2020 TDS Elements Analytical ResultsFDA Total Diet StudyRead source →3Toxic metals and metalloids in collagen supplements of fish and jellyfish origin: Risk assessment for daily intakeOpen MedicineRead source →4The concentration, source and potential human health risk of heavy metals in the commonly consumed foods in BangladeshEcotoxicology and Environmental SafetyRead source →
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Main drivers:
Tilapia, as sold from Kitwe mining area (streams and Kafue River) (mining-affected area) had total mercury higher at 14 µg/kg, against 8 µg/kg for Non-mining control area (Chilubula, Kasama) in the same study.7Assessment of total mercury (Hg) in soil, sediment, and tilapia fish (Oreochromis niloticus) and health risk assessment among residents of Kitwe mining area, ZambiaEnvironmental Science and Pollution ResearchRead source →
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Practical framing:
Ask for lot results with a quantification limit well below the limit that applies in the destination market.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →2FY2018-FY2020 TDS Elements Analytical ResultsFDA Total Diet StudyRead source →3Toxic metals and metalloids in collagen supplements of fish and jellyfish origin: Risk assessment for daily intakeOpen MedicineRead source →4The concentration, source and potential human health risk of heavy metals in the commonly consumed foods in BangladeshEcotoxicology and Environmental SafetyRead source →
Tilapia overview
Tilapia in the HMI library has 286 reported results for lead, cadmium, total arsenic, inorganic arsenic, total mercury, methylmercury, mercury, nickel, chromium, uranium, Cu, Fe, Mn, Zn, Se, Ba, Hg and Mg from 24 sources.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →2FY2018-FY2020 TDS Elements Analytical ResultsFDA Total Diet StudyRead source →3Toxic metals and metalloids in collagen supplements of fish and jellyfish origin: Risk assessment for daily intakeOpen MedicineRead source →4The concentration, source and potential human health risk of heavy metals in the commonly consumed foods in BangladeshEcotoxicology and Environmental SafetyRead source →5Toxic Heavy Metals and Their Risk Assessment of Exposure in Selected Freshwater and Marine Fish in ThailandFoods 2023, 12, 3967Read source →6Heavy Metals Assessment and Health Risk to Consumers of Two Commercial Fish Species from Polyculture Fishponds in El-Sharkia and Kafr El-Sheikh, Egypt: Physiological and Biochemical StudyBiological Trace Element ResearchRead source → WHO GEMS/Food submissions reported lead in tilapia, as sold from 150 results in 2 reporting regions, with subgroup medians from 1 to 2 µg/kg.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source → In the US Total Diet Study, tilapia, cooked had a median lead result below 4 µg/kg across 27 composites from 2017–2020.2FY2018-FY2020 TDS Elements Analytical ResultsFDA Total Diet StudyRead source →
Across 4 other studies of ordinary farms and markets, reported lead means and medians on a dry-weight basis ranged from 346 µg/kg (authors 2021) to 1,850 µg/kg (Mendoza et al. 2023).8International Journal of Fisheries and Aquatic Studies 2021; 9(4): 230-233Peer-reviewed articleRead source →9Detection of Heavy Metals, Their Distribution in Tilapia spp., and Health Risks AssessmentToxics 2023, 11(3), 286Read source → For cadmium, 4 studies on an as-sold or fresh-weight basis reported means and medians from 0.5 µg/kg (Spungen et al. 2024) to 840 µg/kg (Islam et al. 2015).4The concentration, source and potential human health risk of heavy metals in the commonly consumed foods in BangladeshEcotoxicology and Environmental SafetyRead source →10Infants’ and young children’s dietary exposures to lead and cadmium: FDA total diet study 2018-2020Food Additives & Contaminants: Part ARead source → Higher results came from contaminated or exposed settings rather than ordinary supply. Tilapia, as sold from 0.3 mg/L HgCl2 exposure, basal diet (experiment) had total mercury higher at 1,500 µg/kg, against 40 µg/kg for unexposed control, basal diet in the same study.11Toxicity Evaluation, Oxidative, and Immune Responses of Mercury on Nile Tilapia: Modulatory Role of Dietary Nannochloropsis oculataNot reportedRead source →
For a buyer the practical points are the form bought, the basis a result is reported on, where the tilapia came from and the laboratory’s reporting limit. Testing finds contamination but does not remove it.
What counts as tilapia
This page covers tilapia in 4 forms kept separate in every comparison: tilapia, as sold (255 results), tilapia, dried (11 results), tilapia, peeled or flesh (11 results) and tilapia, cooked (9 results).1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →2FY2018-FY2020 TDS Elements Analytical ResultsFDA Total Diet StudyRead source →3Toxic metals and metalloids in collagen supplements of fish and jellyfish origin: Risk assessment for daily intakeOpen MedicineRead source →4The concentration, source and potential human health risk of heavy metals in the commonly consumed foods in BangladeshEcotoxicology and Environmental SafetyRead source →5Toxic Heavy Metals and Their Risk Assessment of Exposure in Selected Freshwater and Marine Fish in ThailandFoods 2023, 12, 3967Read source →6Heavy Metals Assessment and Health Risk to Consumers of Two Commercial Fish Species from Polyculture Fishponds in El-Sharkia and Kafr El-Sheikh, Egypt: Physiological and Biochemical StudyBiological Trace Element ResearchRead source →
Results stay on the basis each source reports: as sold or fresh weight, dry weight, or unstated. Dry-weight, as-sold and unstated results are never pooled, and no moisture conversion is applied.
Heavy metal contamination profile of tilapia
The table holds every extracted tilapia result: one row for each statistic a source reports for a form, group and metal, 286 rows in all, grouped by metal and form; percentiles, ranges and maxima for the same samples as a mean or median are shown on that row.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →2FY2018-FY2020 TDS Elements Analytical ResultsFDA Total Diet StudyRead source →3Toxic metals and metalloids in collagen supplements of fish and jellyfish origin: Risk assessment for daily intakeOpen MedicineRead source →4The concentration, source and potential human health risk of heavy metals in the commonly consumed foods in BangladeshEcotoxicology and Environmental SafetyRead source →5Toxic Heavy Metals and Their Risk Assessment of Exposure in Selected Freshwater and Marine Fish in ThailandFoods 2023, 12, 3967Read source →6Heavy Metals Assessment and Health Risk to Consumers of Two Commercial Fish Species from Polyculture Fishponds in El-Sharkia and Kafr El-Sheikh, Egypt: Physiological and Biochemical StudyBiological Trace Element ResearchRead source → Monitoring medians are HMI calculations from individual submissions; non-detects remain intervals between zero and the reporting limit and are never read as zero.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →
5 rows can be rated against an HMI reference for the same form and basis, 30 rows have a direct same-study comparison, and the rest stay unrated with the reason recorded. 50 values from 7 sources failed a check against their own source and are shown but not compared.4The concentration, source and potential human health risk of heavy metals in the commonly consumed foods in BangladeshEcotoxicology and Environmental SafetyRead source →8International Journal of Fisheries and Aquatic Studies 2021; 9(4): 230-233Peer-reviewed articleRead source →9Detection of Heavy Metals, Their Distribution in Tilapia spp., and Health Risks AssessmentToxics 2023, 11(3), 286Read source →12Analysis of Bioaccumulation of Heavy Metals in Water, Cabbage (Brassica oleracea var. capitata) and Tilapia Fish (Oreochromis niloticus) from Unreclaimed Mining PitsEarth Sciences PakistanRead source →13Hazardous effects of heavy metal pollution on Nile tilapia in the aquatic ecosystem of the Eastern Delta in EgyptBMC Veterinary ResearchRead source →14Mercury and selenium in three fish species from a dam 20 months after a mine-tailing spill in the SE Gulf of California ecoregion, MexicoNot reportedRead source →15Assessment of Potentially Toxic Metals in Fish from Lake Manyara, Northern TanzaniaBulletin of Environmental Contamination and ToxicologyRead source →
Comparison methods and scope
Each row is one statistic a source reports for one form of tilapia, group and metal; percentiles, ranges and maxima reported for the same samples as a mean or median are shown on that row. Different forms and preparation states are kept apart, and dry-weight results never share a reference with as-sold or fresh-weight results. Ratings place a result against an HMI reference built from monitoring results and ordinary-setting medians for the same form and basis. Same-study contrasts compare a contaminated or treated site with its control, targeted with random sampling, a prepared form with the unprocessed one, or one group of a study with the median of its other groups. Held rows failed a check against their own source and are shown but not compared.
First displayed analyte: Lead: 42 findings from 14 sources. Each row retains its statistic and measurement basis.
Filter findings
282 of 282 findings · 18 analytes
About this table
| Food form | Collection scope | Finding (µg/kg) | Comparison | Evidence |
|---|---|---|---|---|
36 findings · 11 studies | ||||
| Tilapia, as soldWHO GEMS/Food | PAHO2009As sold / fresh | median. | ||
| Tilapia, as soldWHO GEMS/Food | SEARO2009–2016As sold / fresh | median. | ||
| Tilapia, as soldWHO GEMS/Food | SEARO2013As sold / fresh | median. | ||
| Tilapia, as soldCammilleri et al. 2025 | Tilapia (Tilapia spp.) source2022–2023As sold / fresh | mean. | ||
| Tilapia, as soldIslam et al. 2015 | Bogra district, all samples2012As sold / fresh | mean. | ||
| Tilapia, as soldIslam et al. 2015 | Tilapia2012As sold / fresh | range. | ||
| Tilapia, as soldSirisangarunroj et al. 2023 | freshwater fish, 3 Bangkok marketsCollection date unreportedAs sold / fresh | not detected. | ||
| Tilapia, as soldSirisangarunroj et al. 2023 | freshwater fish, 3 Bangkok marketsCollection date unreportedAs sold / fresh | not detected. | ||
| Tilapia, as soldAbbas et al. 2023 | ES fishponds, El-SharkiaCollection date unreported | mean. | ||
| Tilapia, as soldAbbas et al. 2023 | KES fishponds, Kafr El-SheikhCollection date unreported | mean. | ||
| Tilapia, as soldauthors 2021 | Tilapia (highest concentration in text)Collection date unreported | max. | ||
| Tilapia, as soldauthors 2021 | Tilapia (species)Collection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R1, muscleCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R2, muscleCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R3, muscleCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R4, muscleCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldOkonofua et al. 2024 | dry season, control (Riyom)2019 | mean. | ||
| Tilapia, as soldOkonofua et al. 2024 | dry season, mining-pit site2019 | mean. | ||
| Tilapia, as soldOkonofua et al. 2024 | rainy season, control (Riyom)2019 | mean. | ||
| Tilapia, as soldOkonofua et al. 2024 | rainy season, mining-pit site2019 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | all five landing sites2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Jangwani ziwani2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Mfulo wa Ng'ombe2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Migunga mitatu2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Minjingu2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Oltukai2022 | mean. | ||
| Tilapia, as soldWHO GEMS/Food | SEARO2015Basis not stated | median. | ||
| Tilapia, as soldShaalan 2024 | Damietta branch of the River Nile, Benha City, Egypt2022Basis not stated | mean. | ||
| Tilapia, as soldShaalan 2024 | El-Rayah El-Tawfeeky canal, Benha City, Egypt2022Basis not stated | mean. | ||
1 finding · 1 study | ||||
| Tilapia, driedOkonofua et al. 2024 | Dry season control (Riyom)2019Basis not stated | sample value. | ||
3 findings · 2 studies | ||||
| Tilapia, peeled or fleshCammilleri et al. 2025 | Brand 42022–2023As sold / fresh | range. | ||
| Tilapia, peeled or fleshRegina et al. 2016 | Bodo River, Ogoniland (oil-polluted)Collection date unreportedBasis not stated | sample value. | ||
| Tilapia, peeled or fleshRegina et al. 2016 | Bodo River, Ogoniland (oil-polluted)Collection date unreportedBasis not stated | sample value. | ||
2 findings · 2 studies | ||||
| Tilapia, cookedFDA Total Diet Study | 6 collection regions2017–2020As sold / fresh | median. | ||
| Tilapia, cookedSpungen et al. 2024 | all samples2018–2020As sold / fresh | not detected. | ||
43 findings · 13 studies · 2 spread figures folded in | ||||
| Tilapia, as soldWHO GEMS/Food | EURO2006–2007As sold / fresh | median. | ||
| Tilapia, as soldWHO GEMS/Food | PAHO2017As sold / fresh | median. | ||
| Tilapia, as soldCammilleri et al. 2025 | Tilapia (Tilapia spp.) source2022–2023As sold / fresh | mean. | ||
| Tilapia, as soldIslam et al. 2015 | Bogra district, all samples2012As sold / fresh | mean. | ||
| Tilapia, as soldIslam et al. 2015 | Tilapia2012As sold / fresh | range. | ||
| Tilapia, as soldJMRS et al. 2010 | foods from CRF patients' homes and domestic environmentCollection date unreportedAs sold / fresh | mean.Same samples: 0.5 µg/kg (minimum); 90.7 µg/kg (maximum) | ||
| Tilapia, as soldJMRS et al. 2010 | foods from CRF patients' homes and domestic environmentCollection date unreportedAs sold / fresh | min. | ||
| Tilapia, as soldJMRS et al. 2010 | foods from CRF patients' homes and domestic environmentCollection date unreportedAs sold / fresh | max. | ||
| Tilapia, as soldJMRS et al. 2010 | Tilapia (O. niloticus)Collection date unreportedAs sold / fresh | range. | ||
| Tilapia, as soldSirisangarunroj et al. 2023 | freshwater fish, 3 Bangkok marketsCollection date unreportedAs sold / fresh | not detected. | ||
| Tilapia, as soldSirisangarunroj et al. 2023 | freshwater fish, 3 Bangkok marketsCollection date unreportedAs sold / fresh | not detected. | ||
| Tilapia, as soldAbbas et al. 2023 | ES fishponds, El-SharkiaCollection date unreported | mean. | ||
| Tilapia, as soldAbbas et al. 2023 | KES fishponds, Kafr El-SheikhCollection date unreported | mean. | ||
| Tilapia, as soldauthors 2021 | Tilapia (highest concentration in text)Collection date unreported | max. | ||
| Tilapia, as soldauthors 2021 | Tilapia (species)Collection date unreported | mean. | ||
| Tilapia, as soldEgbe et al. 2023 | all samplesCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R1, muscleCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R2, muscleCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R3, muscleCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R4, muscleCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldOkonofua et al. 2024 | dry season, control (Riyom)2019 | mean. | ||
| Tilapia, as soldOkonofua et al. 2024 | dry season, mining-pit site2019 | mean. | ||
| Tilapia, as soldOkonofua et al. 2024 | rainy season, control (Riyom)2019 | mean. | ||
| Tilapia, as soldOkonofua et al. 2024 | rainy season, mining-pit site2019 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | All dams muscle (range of dam means)2015–2016 | range. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 1 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 2 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 3 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 4 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 5 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 6 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 7 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 8 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 9 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 10 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 11 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldShaalan 2024 | Damietta branch of the River Nile, Benha City, Egypt2022Basis not stated | mean. | ||
| Tilapia, as soldShaalan 2024 | El-Rayah El-Tawfeeky canal, Benha City, Egypt2022Basis not stated | mean. | ||
2 findings · 1 study | ||||
| Tilapia, driedOkonofua et al. 2024 | Dry season control (Riyom)2019Basis not stated | sample value. | ||
| Tilapia, driedOkonofua et al. 2024 | Rainy season control (Riyom)2019Basis not stated | sample value. | ||
3 findings · 2 studies | ||||
| Tilapia, peeled or fleshCammilleri et al. 2025 | Brand 42022–2023As sold / fresh | range. | ||
| Tilapia, peeled or fleshRegina et al. 2016 | Bodo River, Ogoniland (oil-polluted)Collection date unreportedBasis not stated | sample value. | ||
| Tilapia, peeled or fleshRegina et al. 2016 | Bodo River, Ogoniland (oil-polluted)Collection date unreportedBasis not stated | sample value. | ||
2 findings · 2 studies | ||||
| Tilapia, cookedFDA Total Diet Study | 6 collection regions2017–2020As sold / fresh | median. | ||
| Tilapia, cookedSpungen et al. 2024 | all samples2018–2020As sold / fresh | mean. | ||
12 findings · 4 studies | ||||
| Tilapia, as soldCammilleri et al. 2025 | Tilapia (Tilapia spp.) source2022–2023As sold / fresh | mean. | ||
| Tilapia, as soldIslam et al. 2015 | Bogra district, all samples2012As sold / fresh | mean. | ||
| Tilapia, as soldIslam et al. 2015 | Tilapia2012As sold / fresh | range. | ||
| Tilapia, as soldSirisangarunroj et al. 2023 | freshwater fish, 3 Bangkok marketsCollection date unreportedAs sold / fresh | mean. | ||
| Tilapia, as soldSirisangarunroj et al. 2023 | freshwater fish, 3 Bangkok marketsCollection date unreportedAs sold / fresh | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
3 findings · 2 studies | ||||
| Tilapia, peeled or fleshCammilleri et al. 2025 | Brand 42022–2023As sold / fresh | range. | ||
| Tilapia, peeled or fleshRegina et al. 2016 | Bodo River, Ogoniland (oil-polluted)Collection date unreportedBasis not stated | sample value. | ||
| Tilapia, peeled or fleshRegina et al. 2016 | Bodo River, Ogoniland (oil-polluted)Collection date unreportedBasis not stated | sample value. | ||
1 finding · 1 study | ||||
| Tilapia, cookedFDA Total Diet Study | 6 collection regions2017–2020As sold / fresh | median. | ||
1 finding · 1 study | ||||
| Tilapia, as soldWHO GEMS/Food | WPRO2021As sold / fresh | median. | ||
30 findings · 10 studies · 2 spread figures folded in | ||||
| Tilapia, as soldWHO GEMS/Food | PAHO2009As sold / fresh | median. | ||
| Tilapia, as soldBezerra 2026 | O. niloticus (Re-Farmed)2013–2023As sold / fresh | range. | ||
| Tilapia, as soldBezerra 2026 | Oreochromis niloticus (Re-Wild)2013–2023As sold / fresh | range. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Blue tilapia (Oreochromis aureus) muscle2013–2014As sold / fresh | range. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | El Comedero dam (post mine-tailings spill)2013–2014As sold / fresh | mean. | ||
| Tilapia, as soldSirisangarunroj et al. 2023 | freshwater fish, 3 Bangkok marketsCollection date unreportedAs sold / fresh | not detected. | ||
| Tilapia, as soldSirisangarunroj et al. 2023 | freshwater fish, 3 Bangkok marketsCollection date unreportedAs sold / fresh | not detected. | ||
| Tilapia, as soldSmolikova et al. 2016 | Nile tilapia2015–2016As sold / fresh | mean. | ||
| Tilapia, as soldSmolikova et al. 2016 | one batch of this species (batch not identified in text)2015–2016As sold / fresh | sample value. | ||
| Tilapia, as soldauthors 2021 | Tilapia (highest concentration in text)Collection date unreported | max. | ||
| Tilapia, as soldauthors 2021 | Tilapia (species)Collection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldShumba et al. 2025 | Kitwe mining area (streams and Kafue River)2023 | median. | ||
| Tilapia, as soldShumba et al. 2025 | Kitwe mining area (streams and Kafue River)2023 | mean.Same samples: 45 µg/kg (maximum) | ||
| Tilapia, as soldShumba et al. 2025 | Kitwe mining area (streams and Kafue River)2023 | max. | ||
| Tilapia, as soldShumba et al. 2025 | Mining area, Kitwe (tilapia)2023 | range. | ||
| Tilapia, as soldShumba et al. 2025 | Non-mining area, Chilubula (tilapia)2023 | range. | ||
| Tilapia, as soldShumba et al. 2025 | Non-mining control area (Chilubula, Kasama)2023 | median. | ||
| Tilapia, as soldShumba et al. 2025 | Non-mining control area (Chilubula, Kasama)2023 | mean.Same samples: 54 µg/kg (maximum) | ||
| Tilapia, as soldShumba et al. 2025 | Non-mining control area (Chilubula, Kasama)2023 | max. | ||
| Tilapia, as soldWHO GEMS/Food | PAHO2016Basis not stated | median. | ||
| Tilapia, as soldLin et al. 2021 | Other Fish: TilapiaCollection date unreportedBasis not stated | not detected. | ||
| Tilapia, as soldZahran et al. 2023 | 0.3 mg/L HgCl2 exposure, basal dietCollection date unreportedBasis not stated | mean. | ||
| Tilapia, as soldZahran et al. 2023 | HgCl2 exposure + 5% Nannochloropsis oculata dietCollection date unreportedBasis not stated | mean. | ||
| Tilapia, as soldZahran et al. 2023 | HgCl2 exposure + 10% Nannochloropsis oculata dietCollection date unreportedBasis not stated | mean. | ||
| Tilapia, as soldZahran et al. 2023 | unexposed control, basal dietCollection date unreportedBasis not stated | mean. | ||
1 finding · 1 study | ||||
| Tilapia, peeled or fleshCammilleri et al. 2025 | Brand 42022–2023As sold / fresh | not detected. | ||
1 finding · 1 study | ||||
| Tilapia, cookedFDA Total Diet Study | 6 collection regions2017–2020As sold / fresh | median. | ||
1 finding · 1 study | ||||
| Tilapia, as soldHsi et al. 2016 | Taipei City markets, 20142007–2014As sold / fresh | mean. | ||
2 findings · 1 study | ||||
| Tilapia, driedOkonofua et al. 2024 | Dry season control (Riyom)2019Basis not stated | sample value. | ||
| Tilapia, driedOkonofua et al. 2024 | Rainy season control (Riyom)2019Basis not stated | sample value. | ||
26 findings · 6 studies | ||||
| Tilapia, as soldIslam et al. 2015 | Bogra district, all samples2012As sold / fresh | mean. | ||
| Tilapia, as soldIslam et al. 2015 | Tilapia2012As sold / fresh | range. | ||
| Tilapia, as soldGupta et al. 2024 | Site R1, muscleCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R2, muscleCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R3, muscleCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R4, muscleCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | not detected. | ||
| Tilapia, as soldOkonofua et al. 2024 | dry season, control (Riyom)2019 | mean. | ||
| Tilapia, as soldOkonofua et al. 2024 | dry season, mining-pit site2019 | mean. | ||
| Tilapia, as soldOkonofua et al. 2024 | rainy season, control (Riyom)2019 | mean. | ||
| Tilapia, as soldOkonofua et al. 2024 | rainy season, mining-pit site2019 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | all five landing sites2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Jangwani ziwani2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Mfulo wa Ng'ombe2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Migunga mitatu2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Minjingu2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Oltukai2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | Tilapia, Minjingu2022 | min. | ||
| Tilapia, as soldShaalan 2024 | Damietta branch of the River Nile, Benha City, Egypt2022Basis not stated | mean. | ||
| Tilapia, as soldShaalan 2024 | El-Rayah El-Tawfeeky canal, Benha City, Egypt2022Basis not stated | mean. | ||
2 findings · 1 study | ||||
| Tilapia, driedOkonofua et al. 2024 | Dry season control (Riyom)2019Basis not stated | sample value. | ||
| Tilapia, driedOkonofua et al. 2024 | Rainy season control (Riyom)2019Basis not stated | sample value. | ||
1 finding · 1 study | ||||
| Tilapia, cookedFDA Total Diet Study | 6 collection regions2017–2020As sold / fresh | median. | ||
9 findings · 4 studies | ||||
| Tilapia, as soldCammilleri et al. 2025 | Tilapia (Tilapia spp.) source2022–2023As sold / fresh | mean. | ||
| Tilapia, as soldIslam et al. 2015 | Bogra district, all samples2012As sold / fresh | mean. | ||
| Tilapia, as soldIslam et al. 2015 | Tilapia2012As sold / fresh | range. | ||
| Tilapia, as soldGupta et al. 2024 | Site R1, muscleCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R2, muscleCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R3, muscleCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | Site R4, muscleCollection date unreported | mean. | ||
| Tilapia, as soldShaalan 2024 | Damietta branch of the River Nile, Benha City, Egypt2022Basis not stated | mean. | ||
| Tilapia, as soldShaalan 2024 | El-Rayah El-Tawfeeky canal, Benha City, Egypt2022Basis not stated | mean. | ||
1 finding · 1 study | ||||
| Tilapia, peeled or fleshCammilleri et al. 2025 | Brand 42022–2023As sold / fresh | range. | ||
1 finding · 1 study | ||||
| Tilapia, cookedFDA Total Diet Study | 6 collection regions2017–2020As sold / fresh | median. | ||
4 findings · 1 study | ||||
| Tilapia, driedOkonofua et al. 2024 | Dry season (mining pits)2019Basis not stated | not detected. | ||
| Tilapia, driedOkonofua et al. 2024 | Dry season control (Riyom)2019Basis not stated | not detected. | ||
| Tilapia, driedOkonofua et al. 2024 | Rainy season (mining pits)2019Basis not stated | not detected. | ||
| Tilapia, driedOkonofua et al. 2024 | Rainy season control (Riyom)2019Basis not stated | not detected. | ||
1 finding · 1 study | ||||
| Tilapia, cookedFDA Total Diet Study | 6 collection regions2017–2020As sold / fresh | median. | ||
29 findings · 6 studies | ||||
| Tilapia, as soldIslam et al. 2015 | Bogra district, all samples2012As sold / fresh | mean. | ||
| Tilapia, as soldAbbas et al. 2023 | ES fishponds, El-SharkiaCollection date unreported | mean. | ||
| Tilapia, as soldAbbas et al. 2023 | KES fishponds, Kafr El-SheikhCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 1 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 2 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 3 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 4 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 5 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 6 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 7 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 8 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 9 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 10 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 11 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | all five landing sites2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Jangwani ziwani2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Mfulo wa Ng'ombe2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Migunga mitatu2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Minjingu2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Oltukai2022 | mean. | ||
| Tilapia, as soldShaalan 2024 | Damietta branch of the River Nile, Benha City, Egypt2022Basis not stated | mean. | ||
| Tilapia, as soldShaalan 2024 | El-Rayah El-Tawfeeky canal, Benha City, Egypt2022Basis not stated | mean. | ||
11 findings · 4 studies | ||||
| Tilapia, as soldAbbas et al. 2023 | ES fishponds, El-SharkiaCollection date unreported | mean. | ||
| Tilapia, as soldAbbas et al. 2023 | KES fishponds, Kafr El-SheikhCollection date unreported | mean. | ||
| Tilapia, as soldEgbe et al. 2023 | all samplesCollection date unreported | mean. | ||
| Tilapia, as soldGupta et al. 2024 | all four Cauvery River sites combined (R1-R4), pre-monsoonCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
9 findings · 2 studies | ||||
| Tilapia, as soldAbbas et al. 2023 | ES fishponds, El-SharkiaCollection date unreported | mean. | ||
| Tilapia, as soldAbbas et al. 2023 | KES fishponds, Kafr El-SheikhCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
28 findings · 5 studies | ||||
| Tilapia, as soldAbbas et al. 2023 | ES fishponds, El-SharkiaCollection date unreported | mean. | ||
| Tilapia, as soldAbbas et al. 2023 | KES fishponds, Kafr El-SheikhCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 1 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 2 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 3 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 4 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 5 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 6 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 7 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 8 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 9 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 10 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldPáez-Osuna et al. 2024 | Dam 11 (reservoir with mining sub-basin)2015–2016 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | all five landing sites2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Jangwani ziwani2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Mfulo wa Ng'ombe2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Migunga mitatu2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Minjingu2022 | mean. | ||
| Tilapia, as soldSawe et al. 2023 | landing site Oltukai2022 | mean. | ||
| Tilapia, as soldShaalan 2024 | Damietta branch of the River Nile, Benha City, Egypt2022Basis not stated | mean. | ||
| Tilapia, as soldShaalan 2024 | El-Rayah El-Tawfeeky canal, Benha City, Egypt2022Basis not stated | mean. | ||
1 finding · 1 study | ||||
| Tilapia, as soldPáez-Osuna et al. 2024 | El Comedero dam (post mine-tailings spill)2013–2014As sold / fresh | mean. | ||
7 findings · 1 study | ||||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
| Tilapia, as soldMendoza et al. 2023 | Calapan City vendors, 11 barangaysCollection date unreported | mean. | ||
6 findings · 2 studies | ||||
| Tilapia, as soldOkonofua et al. 2024 | dry season, control (Riyom)2019 | mean. | ||
| Tilapia, as soldOkonofua et al. 2024 | dry season, mining-pit site2019 | mean. | ||
| Tilapia, as soldOkonofua et al. 2024 | rainy season, control (Riyom)2019 | mean. | ||
| Tilapia, as soldOkonofua et al. 2024 | rainy season, mining-pit site2019 | not detected. | ||
| Tilapia, as soldShaalan 2024 | Damietta branch of the River Nile, Benha City, Egypt2022Basis not stated | mean. | ||
| Tilapia, as soldShaalan 2024 | El-Rayah El-Tawfeeky canal, Benha City, Egypt2022Basis not stated | mean. | ||
2 findings · 1 study | ||||
| Tilapia, as soldShaalan 2024 | Damietta branch of the River Nile, Benha City, Egypt2022Basis not stated | mean. | ||
| Tilapia, as soldShaalan 2024 | El-Rayah El-Tawfeeky canal, Benha City, Egypt2022Basis not stated | mean. | ||
Shared dataset methods and interpretation
Source summaries retain their original statistic, material, basis and censoring. Each source drawer identifies methods and overlapping samples. No matched reference or pooled distribution is inferred.
HMI tilapia Pb reference · Tilapia, as sold
Reference and scope
HMI tilapia Pb reference · Tilapia, as sold. Tilapia, as sold; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤10 | ≤11.2 | ≤12.3 |
| Alternative weighting | ≤10 | ≤11.2 | ≤12.3 |
12 reference units; 2 sampling families. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| WHO GEMS/Food | 10 | 50% |
| Sirisangarunroj et al. 2023 | 2 | 50% |
Methods
HMI pools subgroup medians for tilapia, as sold on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
2 sampling families with different designs; none is a probability sample of world supply. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-e2a18cd0d1e3:81fc68b9f5d3
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia Pb reference · Tilapia, as sold, dry weight
Reference and scope
HMI tilapia Pb reference · Tilapia, as sold, dry weight. Tilapia, as sold; Dry weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤1000 | ≤1000 | ≤1000 |
| Alternative weighting | ≤1000 | ≤1000 | ≤1000 |
4 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| Mendoza et al. 2023 | 4 | 100% |
Methods
HMI pools subgroup medians for tilapia, as sold on a dry weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
Mendoza et al. 2023 is the only compatible sampling family for tilapia, as sold on this basis in the completed tilapia ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-f286bf4488d5:fbe0c2b4c94d
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia Pb reference · Tilapia, as sold, basis not stated
Reference and scope
HMI tilapia Pb reference · Tilapia, as sold, basis not stated. Tilapia, as sold; Basis not stated by the source, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | 2 | 2 | 2 |
| Alternative weighting | 2 | 2 | 2 |
1 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| WHO GEMS/Food | 1 | 100% |
Methods
HMI pools subgroup medians for tilapia, as sold on a basis not stated by the source basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
WHO GEMS/Food is the only compatible sampling family for tilapia, as sold on this basis in the completed tilapia ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-1fc7e32fb82c:36315322a58d
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia Pb reference · Tilapia, cooked
Reference and scope
HMI tilapia Pb reference · Tilapia, cooked. Tilapia, cooked; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤4 | ≤4 | ≤4 |
| Alternative weighting | ≤4 | ≤4 | ≤4 |
28 reference units; 2 sampling families. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| FDA Total Diet Study | 27 | 50% |
| Spungen et al. 2024 | 1 | 50% |
Methods
HMI pools subgroup medians for tilapia, cooked on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
2 sampling families with different designs; none is a probability sample of world supply. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-6ef096f064d1:03793878d8c0
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia Cd reference · Tilapia, as sold
Reference and scope
HMI tilapia Cd reference · Tilapia, as sold. Tilapia, as sold; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤0.9 | ≤0.95 | ≤25 |
| Alternative weighting | ≤0.9 | ≤0.95 | ≤25 |
5 reference units; 2 sampling families. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| WHO GEMS/Food | 3 | 50% |
| Sirisangarunroj et al. 2023 | 2 | 50% |
Methods
HMI pools subgroup medians for tilapia, as sold on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
2 sampling families with different designs; none is a probability sample of world supply. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-487c9dace259:0db2b0d3ad27
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia Cd reference · Tilapia, cooked
Reference and scope
HMI tilapia Cd reference · Tilapia, cooked. Tilapia, cooked; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤1 | ≤1 | ≤1 |
| Alternative weighting | ≤1 | ≤1 | ≤1 |
27 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| FDA Total Diet Study | 27 | 100% |
Methods
HMI pools subgroup medians for tilapia, cooked on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
FDA Total Diet Study is the only compatible sampling family for tilapia, cooked on this basis in the completed tilapia ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-c5a540ce73c9:3fe588b8c1a3
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia tAs reference · Tilapia, as sold, dry weight
Reference and scope
HMI tilapia tAs reference · Tilapia, as sold, dry weight. Tilapia, as sold; Dry weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤1000 | ≤1000 | ≤1000 |
| Alternative weighting | ≤1000 | ≤1000 | ≤1000 |
5 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| Mendoza et al. 2023 | 5 | 100% |
Methods
HMI pools subgroup medians for tilapia, as sold on a dry weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
Mendoza et al. 2023 is the only compatible sampling family for tilapia, as sold on this basis in the completed tilapia ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-4c87b66dc251:1014f48907d0
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia tAs reference · Tilapia, cooked
Reference and scope
HMI tilapia tAs reference · Tilapia, cooked. Tilapia, cooked; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | 74 | 100 | 150 |
| Alternative weighting | 74 | 100 | 130 |
27 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| FDA Total Diet Study | 27 | 100% |
Methods
HMI pools subgroup medians for tilapia, cooked on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
FDA Total Diet Study is the only compatible sampling family for tilapia, cooked on this basis in the completed tilapia ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-09efe8eed0fd:2bcf5f0a9a7a
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia iAs reference · Tilapia, as sold
Reference and scope
HMI tilapia iAs reference · Tilapia, as sold. Tilapia, as sold; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤20 | ≤20 | ≤20 |
| Alternative weighting | ≤20 | ≤20 | ≤20 |
1 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| WHO GEMS/Food | 1 | 100% |
Methods
HMI pools subgroup medians for tilapia, as sold on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
WHO GEMS/Food is the only compatible sampling family for tilapia, as sold on this basis in the completed tilapia ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-78c97594fbbf:a10167572691
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia tHg reference · Tilapia, as sold
Reference and scope
HMI tilapia tHg reference · Tilapia, as sold. Tilapia, as sold; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤3.1 | 3.1–12.4 (bounded) | 50 |
| Alternative weighting | ≤3.1 | 3.1–12.4 (bounded) | 50 |
4 reference units; 3 sampling families. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| WHO GEMS/Food | 1 | 33% |
| Sirisangarunroj et al. 2023 | 2 | 33% |
| Smolikova et al. 2016 | 1 | 33% |
Methods
HMI pools subgroup medians for tilapia, as sold on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
3 sampling families with different designs; none is a probability sample of world supply. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-31124a02e4fc:f42743acd8a7
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia tHg reference · Tilapia, as sold, dry weight
Reference and scope
HMI tilapia tHg reference · Tilapia, as sold, dry weight. Tilapia, as sold; Dry weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤1000 | ≤1000 | ≤1000 |
| Alternative weighting | ≤1000 | ≤1000 | ≤1000 |
6 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| Mendoza et al. 2023 | 6 | 100% |
Methods
HMI pools subgroup medians for tilapia, as sold on a dry weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
Mendoza et al. 2023 is the only compatible sampling family for tilapia, as sold on this basis in the completed tilapia ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-dc0473dd6ff3:ef86742d09de
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia tHg reference · Tilapia, as sold, basis not stated
Reference and scope
HMI tilapia tHg reference · Tilapia, as sold, basis not stated. Tilapia, as sold; Basis not stated by the source, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤50 | ≤50 | ≤50 |
| Alternative weighting | ≤50 | ≤50 | ≤50 |
1 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| WHO GEMS/Food | 1 | 100% |
Methods
HMI pools subgroup medians for tilapia, as sold on a basis not stated by the source basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
WHO GEMS/Food is the only compatible sampling family for tilapia, as sold on this basis in the completed tilapia ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-fdc8aa5f28cc:4e44f47ec44e
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia tHg reference · Tilapia, cooked
Reference and scope
HMI tilapia tHg reference · Tilapia, cooked. Tilapia, cooked; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | 2.7 | 5.1 | 9.6 |
| Alternative weighting | 2.7 | 5.05 | 9.6 |
27 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| FDA Total Diet Study | 27 | 100% |
Methods
HMI pools subgroup medians for tilapia, cooked on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
FDA Total Diet Study is the only compatible sampling family for tilapia, cooked on this basis in the completed tilapia ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-b23e2608110a:ac20314d38ef
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia Ni reference · Tilapia, as sold, dry weight
Reference and scope
HMI tilapia Ni reference · Tilapia, as sold, dry weight. Tilapia, as sold; Dry weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤3000 | ≤3000 | ≤3000 |
| Alternative weighting | ≤3000 | ≤3000 | ≤3000 |
6 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| Mendoza et al. 2023 | 6 | 100% |
Methods
HMI pools subgroup medians for tilapia, as sold on a dry weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
Mendoza et al. 2023 is the only compatible sampling family for tilapia, as sold on this basis in the completed tilapia ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-21a93807188a:cd965db25c06
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia Ni reference · Tilapia, cooked
Reference and scope
HMI tilapia Ni reference · Tilapia, cooked. Tilapia, cooked; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤40 | ≤40 | ≤40 |
| Alternative weighting | ≤40 | ≤40 | ≤40 |
27 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| FDA Total Diet Study | 27 | 100% |
Methods
HMI pools subgroup medians for tilapia, cooked on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
FDA Total Diet Study is the only compatible sampling family for tilapia, cooked on this basis in the completed tilapia ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-ce9c7ef43c79:8c1d3aa3103a
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia Cr reference · Tilapia, cooked
Reference and scope
HMI tilapia Cr reference · Tilapia, cooked. Tilapia, cooked; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤50 | ≤50 | ≤50 |
| Alternative weighting | ≤50 | ≤50 | ≤50 |
27 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| FDA Total Diet Study | 27 | 100% |
Methods
HMI pools subgroup medians for tilapia, cooked on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
FDA Total Diet Study is the only compatible sampling family for tilapia, cooked on this basis in the completed tilapia ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-6a7430431f63:eaecf917b538
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
HMI tilapia U reference · Tilapia, cooked
Reference and scope
HMI tilapia U reference · Tilapia, cooked. Tilapia, cooked; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.
| Reference (µg/kg) | Q1 | Median | Q3 |
|---|---|---|---|
| Primary HMI reference | ≤1 | ≤1 | ≤1 |
| Alternative weighting | ≤1 | ≤1 | ≤1 |
27 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.
| Contributing family | Reference units | Weight |
|---|---|---|
| FDA Total Diet Study | 27 | 100% |
Methods
HMI pools subgroup medians for tilapia, cooked on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.
Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.
Limitations
FDA Total Diet Study is the only compatible sampling family for tilapia, cooked on this basis in the completed tilapia ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.
Admitted source families
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
hmi-pooled-reference-v2:tilapia-f3f3df96f0d5:7e3c31f55e29
The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.
The source reports only a percentile, range or maximum for these samples, with no mean or median to place against the reference. Spread figures that do have a mean or median are shown on that row instead.
The value could not be reconciled with its own paper, so it is shown but not compared.
The result is below a reporting limit, and the range from zero to that limit crosses more than one band.
No medians or sample values exist for this form and metal, so no HMI reference could be built.
The HMI reference for this form has fewer than four units or no measurable spread, below the display minimum.
The result is on a basis (dry weight, or not stated) that no HMI reference for this form uses, so it cannot be placed.
No findings match these filters. Change the selection or reset to show all source findings.
How metals reach tilapia
The evidence on how metals reach tilapia comes from studies that compared exposed and ordinary settings. Tilapia, as sold from 0.3 mg/L HgCl2 exposure, basal diet (experiment) had total mercury higher at 1,500 µg/kg, against 40 µg/kg for unexposed control, basal diet in the same study.11Toxicity Evaluation, Oxidative, and Immune Responses of Mercury on Nile Tilapia: Modulatory Role of Dietary Nannochloropsis oculataNot reportedRead source → In another study, tilapia, dried from Dry season control (Riyom) (mining-affected area) had nickel higher at 15 µg/kg, against 5 µg/kg for Rainy season control (Riyom) in the same study.12Analysis of Bioaccumulation of Heavy Metals in Water, Cabbage (Brassica oleracea var. capitata) and Tilapia Fish (Oreochromis niloticus) from Unreclaimed Mining PitsEarth Sciences PakistanRead source → A third study found that tilapia, as sold from Kitwe mining area (streams and Kafue River) (mining-affected area) had total mercury higher at 15 µg/kg, against 7 µg/kg for Non-mining control area (Chilubula, Kasama) in the same study.7Assessment of total mercury (Hg) in soil, sediment, and tilapia fish (Oreochromis niloticus) and health risk assessment among residents of Kitwe mining area, ZambiaEnvironmental Science and Pollution ResearchRead source →
These are observational comparisons from single studies; the size of the difference depends on the site, metal and distance.
Which forms and regions measured lower
The HMI reference for lead in tilapia, cooked pools 28 subgroup units from 2 sampling families, with a median of below 4 µg/kg and a middle half spanning below 4 (lower quartile) and below 4 µg/kg (upper quartile).2FY2018-FY2020 TDS Elements Analytical ResultsFDA Total Diet StudyRead source →10Infants’ and young children’s dietary exposures to lead and cadmium: FDA total diet study 2018-2020Food Additives & Contaminants: Part ARead source → For lead in tilapia, as sold, the reference median was below 11.2 µg/kg, with a middle half from below 10 to below 12.3 µg/kg across 12 units.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →5Toxic Heavy Metals and Their Risk Assessment of Exposure in Selected Freshwater and Marine Fish in ThailandFoods 2023, 12, 3967Read source → For lead in tilapia, as sold, the reference median was below 1,000 µg/kg, with a middle half from below 1,000 to below 1,000 µg/kg across 4 units.9Detection of Heavy Metals, Their Distribution in Tilapia spp., and Health Risks AssessmentToxics 2023, 11(3), 286Read source →
Among GEMS/Food reporting regions, tilapia, as sold had the lowest lead subgroup median in PAHO (1 µg/kg) and the highest in SEARO (2 µg/kg); reporting regions are markets, not growing areas.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →
In one study, lead across 5 groups of tilapia ranged from 580 µg/kg (landing site Migunga mitatu) to 730 µg/kg (landing site Oltukai); the lowest is the lowest observed in that study, not an established sourcing preference.15Assessment of Potentially Toxic Metals in Fish from Lake Manyara, Northern TanzaniaBulletin of Environmental Contamination and ToxicologyRead source →
Processing, cooking and preparation
No processing study for metals in this food is in the library yet.
Mitigation for tilapia
Lot testing against the applicable limit is the check that can be verified.
No measured way to lower metals in this food is in the library yet.
Trade-offs and limits of controls
Avoiding exposed growing areas lowered the metal measured in the studies available, but no study measured the cost or supply effect of doing so.11Toxicity Evaluation, Oxidative, and Immune Responses of Mercury on Nile Tilapia: Modulatory Role of Dietary Nannochloropsis oculataNot reportedRead source → Metals do not move together, so a lot that passes a lead limit says little about cadmium, arsenic or nickel unless those are tested as well.
Testing tilapia for metals
Results depend on the method and its reporting limit. Reporting limits for lead ranged from 1 µg/kg (WHO GEMS/Food) to 1,000 µg/kg (Mendoza et al. 2023), so a non-detect from a less sensitive method says much less.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →9Detection of Heavy Metals, Their Distribution in Tilapia spp., and Health Risks AssessmentToxics 2023, 11(3), 286Read source → Reporting limits for cadmium ranged from 0.9 µg/kg (Sirisangarunroj et al. 2023) to 2,000 µg/kg (Mendoza et al. 2023), so a non-detect from a less sensitive method says much less.5Toxic Heavy Metals and Their Risk Assessment of Exposure in Selected Freshwater and Marine Fish in ThailandFoods 2023, 12, 3967Read source →9Detection of Heavy Metals, Their Distribution in Tilapia spp., and Health Risks AssessmentToxics 2023, 11(3), 286Read source → Reporting limits for total arsenic ranged from 3 µg/kg (FDA Total Diet Study) to 1,000 µg/kg (Mendoza et al. 2023), so a non-detect from a less sensitive method says much less.2FY2018-FY2020 TDS Elements Analytical ResultsFDA Total Diet StudyRead source →9Detection of Heavy Metals, Their Distribution in Tilapia spp., and Health Risks AssessmentToxics 2023, 11(3), 286Read source →
A useful lot result names the form, the basis and a quantification limit well below the limit that applies.
Buying and verifying tilapia
No maximum level for metals in tilapia was verified from primary text for this page; buyers should confirm the limit that applies in the destination market.
Exposure from tilapia
No source in the library converted tilapia concentrations into a verified estimate of intake for a defined population. Concentrations describe the food, not individual risk.
Evidence review and remaining gaps
Every source record that names tilapia was decided on its content: 24 occurrence extracted, 24 records in all. The occurrence table renders every extracted result; held values remain visible with their reason.
References identify the sources used in these answers. The Sources index preserves additional discovery links; inclusion there does not mean a source has been reviewed for this assessment. Corrections, completed searches, new direct evidence and changes in requirements should reopen the relevant answer.
Tilapia FAQs
What heavy metals are found in tilapia?
The library reports lead, cadmium, total arsenic, inorganic arsenic, total mercury, methylmercury, mercury, nickel, chromium, uranium, Cu, Fe, Mn, Zn, Se, Ba, Hg and Mg in tilapia, most often lead, cadmium and total arsenic.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →2FY2018-FY2020 TDS Elements Analytical ResultsFDA Total Diet StudyRead source →3Toxic metals and metalloids in collagen supplements of fish and jellyfish origin: Risk assessment for daily intakeOpen MedicineRead source →4The concentration, source and potential human health risk of heavy metals in the commonly consumed foods in BangladeshEcotoxicology and Environmental SafetyRead source → WHO GEMS/Food submissions reported lead in tilapia, as sold from 150 results in 2 reporting regions, with subgroup medians from 1 to 2 µg/kg.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →
How do heavy metals get into tilapia?
In the studies available, tilapia from contaminated or exposed settings carried more metal than tilapia from the same study’s control.7Assessment of total mercury (Hg) in soil, sediment, and tilapia fish (Oreochromis niloticus) and health risk assessment among residents of Kitwe mining area, ZambiaEnvironmental Science and Pollution ResearchRead source → Tilapia, as sold from Kitwe mining area (streams and Kafue River) (mining-affected area) had total mercury higher at 14 µg/kg, against 8 µg/kg for Non-mining control area (Chilubula, Kasama) in the same study.7Assessment of total mercury (Hg) in soil, sediment, and tilapia fish (Oreochromis niloticus) and health risk assessment among residents of Kitwe mining area, ZambiaEnvironmental Science and Pollution ResearchRead source →
Which regions report the lowest levels in tilapia?
Among GEMS/Food reporting regions, tilapia, as sold had the lowest lead subgroup median in PAHO (1 µg/kg) and the highest in SEARO (2 µg/kg); reporting regions are markets, not growing areas.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →
How much of the arsenic in tilapia is inorganic?
Inorganic arsenic, the more toxic form, was measured in 1 result from 1 source, far fewer than total arsenic.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source → WHO GEMS/Food submissions reported inorganic arsenic in tilapia, as sold from 1 result in 1 reporting region, with subgroup medians below 20 µg/kg, mostly non-detects.1GEMS/Food Contaminants database heavy-metal exportsGEMS/Food Contamination Monitoring and Assessment ProgrammeRead source →
References
Works cited on this page, in citation-number order. See Sources for this page’s source inventory. Each title links to a source record with bibliographic details, reported findings, and document provenance.
- GEMS/Food Contaminants database heavy-metal exportsDataset
- FY2018-FY2020 TDS Elements Analytical ResultsDataset
- Toxic metals and metalloids in collagen supplements of fish and jellyfish origin: Risk assessment for daily intakePeer-reviewed
- The concentration, source and potential human health risk of heavy metals in the commonly consumed foods in BangladeshPeer-reviewed
- Toxic Heavy Metals and Their Risk Assessment of Exposure in Selected Freshwater and Marine Fish in ThailandPeer-reviewed
- Heavy Metals Assessment and Health Risk to Consumers of Two Commercial Fish Species from Polyculture Fishponds in El-Sharkia and Kafr El-Sheikh, Egypt: Physiological and Biochemical StudyPeer-reviewed
- Assessment of total mercury (Hg) in soil, sediment, and tilapia fish (Oreochromis niloticus) and health risk assessment among residents of Kitwe mining area, ZambiaPeer-reviewed
- International Journal of Fisheries and Aquatic Studies 2021; 9(4): 230-233Peer-reviewed
- Detection of Heavy Metals, Their Distribution in Tilapia spp., and Health Risks AssessmentPeer-reviewed
- Infants’ and young children’s dietary exposures to lead and cadmium: FDA total diet study 2018-2020Peer-reviewed
- Toxicity Evaluation, Oxidative, and Immune Responses of Mercury on Nile Tilapia: Modulatory Role of Dietary Nannochloropsis oculataPeer-reviewed
- Analysis of Bioaccumulation of Heavy Metals in Water, Cabbage (Brassica oleracea var. capitata) and Tilapia Fish (Oreochromis niloticus) from Unreclaimed Mining PitsPeer-reviewed
- Hazardous effects of heavy metal pollution on Nile tilapia in the aquatic ecosystem of the Eastern Delta in EgyptPeer-reviewed
- Mercury and selenium in three fish species from a dam 20 months after a mine-tailing spill in the SE Gulf of California ecoregion, MexicoPeer-reviewed
- Assessment of Potentially Toxic Metals in Fish from Lake Manyara, Northern TanzaniaPeer-reviewed
Sources
Browse Tilapia Sources for sources cited on this page and additional discovery candidates. The searchable index distinguishes verified citation use from discovery relationships whose relevance has not been established.
Update history
22 October 2026: Rebuilt from every tilapia record in the library: 24 occurrence sources, references by form and basis, same-study contrasts.
