Overview
This study is the first systematic assessment of lead contamination in Australian game meat, examining 133 samples of four types: commercially available kangaroo (n=36) and Bennett’s wallaby (n=28) products, and recreationally harvested venison (n=32) and stubble quail (n=37). Lead contamination arises from ammunition (lead-based gunshot and bullets) used in harvest. The study uses both digital radiography (to detect lead fragments) and ICP-MS (to measure total lead concentration). Venison and quail samples showed high exceedance rates of the Australian food safety threshold (0.1 mg/kg wet weight for livestock meat): 53% of venison and 86% of quail samples exceeded this threshold.
Key numbers
Mean lead concentrations (mg/kg wet weight = ppm = 1,000 ppb):
- Kangaroo: 0.01 ± 0.01 mg/kg (= 10 ± 10 ppb)
- Wallaby: 0.02 ± 0.01 mg/kg (= 20 ± 10 ppb)
- Venison: 0.12 ± 0.07 mg/kg (= 120 ± 70 ppb)
- Quail: 1.76 ± 3.76 mg/kg (= 1,760 ± 3,760 ppb)
Australian food safety threshold for livestock meat: 0.1 mg/kg (100 ppb) Pb.
Exceedance rates:
- Kangaroo: 0% of samples exceeded threshold
- Wallaby: not stated to exceed in abstract
- Venison: 53% exceeded 0.1 mg/kg threshold
- Quail: 86% exceeded 0.1 mg/kg threshold
Radiography detection: radiography detected only 35% of samples that were above the food safety threshold, demonstrating poor sensitivity compared to ICP-MS.
Fragment detection rates by radiography: 0% in kangaroo, 4% in wallaby, 28% in venison, 35% in quail.
n=133 total; jurisdiction: Australia (AU).
Methods (brief)
Meat samples obtained from commercial supermarkets (kangaroo, wallaby) and from recreational hunters (venison, quail). Digital radiography for fragment detection. ICP-MS for lead measurement (iCAP Q, Thermo-Fisher Scientific) at Edith Cowan University analytical laboratory; microwave acid digestion. Certified reference materials used as positive controls. CC BY open access.
Implications
Certification: Game meat is a niche but growing category. Lead from ammunition is the dominant contamination pathway — entirely distinct from soil/agricultural pathways. The 86% exceedance rate in quail is extremely high; commercial kangaroo products are essentially clean by comparison. HMT&C game meat certification would need to address ammunition type as a critical control point.
Courses: Strong case study for the lead module and the supply-chain contamination pathway module — demonstrates that the contamination route (ammunition) determines the product risk profile, not the inherent metal biology of the food.
App: Contributes to contamination_profile for game meat (venison, quail as high-risk; kangaroo as low-risk). Values: venison 120 ppb Pb mean; quail 1,760 ppb Pb mean; kangaroo 10 ppb Pb mean.
Microbiome: Not applicable.
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Update history
The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.
| Commit | Date | Change | Description |
|---|---|---|---|
| a8052bb | 2026-08-09 | major | 6 sections added; narrative text revised |