IN Brief:
- The FDA tested more than 300 infant formula samples across the US market.
- The programme generated more than 120,000 data points covering heavy metals, pesticides, PFAS, and phthalates.
- Further testing and manufacturer engagement will continue through the FDA’s broader formula safety work.
The US Food and Drug Administration has released results from its largest chemical contaminant testing programme focused on infant formula available on the US market.
The agency tested more than 300 infant formula samples representing products sold at retail across the US, generating more than 120,000 data points. The programme covered lead, mercury, cadmium, arsenic, pesticides including glyphosate and glufosinate, per- and polyfluoroalkyl substances, and phthalates.
The samples included powders, ready-to-feed liquids, and concentrated liquids, and were tested in FDA laboratories. The agency reported that the overwhelming majority of samples contained undetectable or very low levels of contaminants, with follow-up testing set to continue as part of wider monitoring and oversight work.
The testing sits within Operation Stork Speed, the FDA’s Closer to Zero initiative, and routine food surveillance activity. The agency plans further testing, including for additional contaminants, and will continue engagement with manufacturers on reducing contaminant levels as far as possible. Work is also planned on action levels for contaminants in infant formula.
Infant formula manufacturing operates under unusually high safety expectations. Formula is often the sole or primary source of nutrition for infants, placing contaminant control, ingredient assurance, and process governance under heavier scrutiny than most other food categories.
Testing at this scale gives regulators and manufacturers a broader benchmark on contaminant levels across product formats and brands. It does not replace company-level controls, but it strengthens the evidence base behind future action levels, supplier expectations, and surveillance priorities.
The programme also reflects a wider move in food safety regulation towards preventive, data-led oversight. Heavy metals, pesticide residues, PFAS, and phthalates can enter food systems through raw materials, water, soil, processing aids, packaging contact, or environmental exposure. Control therefore depends on more than finished-product testing.
Formula manufacturers will face continued scrutiny of ingredient sourcing, mineral premixes, dairy inputs, water quality, packaging materials, and internal testing protocols. Documentation and trend data will become increasingly important as regulators build larger datasets on contaminant pathways across the supply chain.
The FDA’s follow-up testing plans point to a longer surveillance cycle rather than a one-off survey. As more data becomes available, regulators can refine tolerances, establish action levels, and push manufacturers towards continuous reduction of unwanted contaminants rather than simple compliance at finished-pack stage.
The category remains shaped by the supply-chain disruption and recall pressure that exposed weaknesses in US infant formula resilience earlier in the decade. Chemical contaminant monitoring is one part of that wider safety picture, alongside microbiological controls, nutritional adequacy, manufacturing redundancy, and supply continuity.
The latest results create a more detailed baseline for the US market. They also confirm a tougher direction for infant formula oversight, with greater transparency, deeper testing, and closer examination of the full chain from ingredient supply to finished-product release.
