FDA Closer to Zero — 20 ppb Lead Action Level for Dry Infant Cereals
Under the Closer to Zero program, the US Food and Drug Administration has established a 20 ppb action level for lead in dry infant cereals (FDA CTZ Pb 2025). Dry infant cereal is held to a separate threshold from other processed baby foods because it is often the first solid food introduced to an infant and may be the only solid food consumed for an extended period during a critical developmental window, which FDA considered in choosing a level that reduces dietary exposure while remaining achievable by industry (FDA CTZ Pb 2025).
Scope
The category of dry infant cereals, as used in the guidance, includes dried cereals without additions and dried cereals containing dried fruits or vegetables (for example, apple, banana, or carrot). The guidance does not separately address single-grain versus multi-grain dry cereals; the occurrence analysis treats all dry infant cereals as one matrix category (FDA CTZ Pb 2025). Infant rice cereal, which is subject to a separately finalized inorganic arsenic action level under Closer to Zero, is a subset of this lead matrix category.
Exact limit and units
Limit parameters from FDA CTZ Pb 2025:
| Parameter | Value |
|---|---|
| Action level | 20 ppb |
| Unit definition | Parts per billion equals micrograms per kilogram (µg/kg) |
| Basis | Whole sample, as sold |
| Analytical method | Inductively coupled plasma mass spectrometry (ICP-MS) |
| Sample composition | 12 randomly selected subsamples from a single lot, per Toxic Elements Program protocol |
Enforcement posture
The action level is non-binding guidance under 21 CFR 109.6(d), operating the same way as the other two action levels in this guidance. FDA may regard a dry infant cereal with lead at or above 20 ppb as adulterated within the meaning of section 402(a)(1) of the Federal Food, Drug, and Cosmetic Act, and will consider the action level alongside analytical confidence when deciding whether to bring an enforcement action (FDA CTZ Pb 2025).
Achievability assessment
At the 20 ppb action level, 91 percent of dry infant cereal samples in the combined Toxic Elements Program and FDA survey dataset fall at or below the level (FDA CTZ Pb 2025). The occurrence statistics:
| Matrix | n | Mean ± SD (ppb) | 90th percentile (ppb) | 95th percentile (ppb) |
|---|---|---|---|---|
| Dry infant cereals | 411 | 7.8 ± 8.4 | 20.0 | 23.0 |
The Total Diet Study (FY 2014-2020) complementary dataset, which averages across retail samples and was not used in the achievability calculation, shows a lower mean of 2.6 ± 2.9 ppb for dry infant cereal (n = 23) (FDA CTZ Pb 2025). The TDS pattern suggests that retail-averaged exposure may be lower than the per-sample occurrence suggests, but the achievability analysis correctly uses per-sample data because compliance is evaluated at the lot level.
Exposure reduction
| Scenario | Mean Pb concentration (ppb) | 90th percentile dietary exposure (µg/day) |
|---|---|---|
| Status quo (no action level) | 7.8 | 0.30 |
| With 20 ppb action level | 6.0 | 0.23 |
Exposure reduction: 24 percent (FDA CTZ Pb 2025). The 90th percentile 2-day average consumption by eaters only, 0 to 23 months, is 39 g/day, the smallest of the three matrix categories in this guidance (compared with 354 g/day for the combined category and 106 g/day for root vegetables) (FDA CTZ Pb 2025). The lower absolute exposure despite a higher mean concentration reflects smaller daily consumption volumes.
Why dry infant cereal gets a separate category
FDA states that dry infant cereal is often the first solid food introduced to an infant and may be the only solid food consumed for an extended period of time during a critical period of development (FDA CTZ Pb 2025). This developmental-exposure rationale weighs against folding cereal into a combined category: infants in the period during which dry cereal may be near-sole solid intake are also in the developmental window during which lead neurotoxicity is most consequential. The 20 ppb level was selected as the level that reduces exposure meaningfully while maintaining 91 percent achievability; at a tighter 10 ppb level, industry achievability would fall sharply given the mean concentration of 7.8 ppb and 90th percentile of 20.0 ppb in the occurrence data, and market availability of dry infant cereal would be affected (FDA CTZ Pb 2025).
Reference value context
See fda-ctz-Pb-babyfood-10ppb for the IRL derivation. The 2.2 µg/day IRL for children is the same reference value against which all three action levels under this guidance were evaluated.
History
See fda-ctz-Pb-babyfood-10ppb for shared program history. This action level finalized in January 2025 under docket FDA-2022-D-0278 (FDA CTZ Pb 2025).
Comparison to EU, Codex, and state rules
For the Category 1 lead comparison layer, see lead-benchmark-context. EU Regulation 2023/915 maps processed cereal-based food for infants and young children to 20 ppb lead as placed on the market, matching FDA’s 20 ppb lead action level for dry infant cereal in concentration value but not in legal form. California Proposition 65 remains exposure-based; using FDA’s 15 g dry-infant-cereal reference amount, the 0.5 ug/day lead MADL converts to 33.3 ppb for one 15 g/day serving.
Parent program
Sources
- FDA CTZ Pb 2025 (evidence tier A, US government work)