FDA Finds Most Infant Formula Samples Had Undetectable or Very Low Contaminant Levels

The U.S. Food and Drug Administration has released results from its largest-ever testing program for infant formula, offering families a broad snapshot of contaminant levels in products sold across the country. In its April 29, 2026 announcement, the agency said it tested more than 300 samples and generated more than 120,000 individual data points.

The FDA said the overwhelming majority of samples contained either undetectable or very low levels of the substances included in the survey. The results are useful reassurance, but they should be read as a large monitoring snapshot rather than a guarantee about every product, batch or individual container.

What the FDA tested

The sampling covered the main types of infant formula available to families: powdered formula, ready-to-feed liquid formula and concentrated liquid formula. FDA laboratories analyzed the samples for several groups of contaminants, including lead, mercury, cadmium and arsenic. The program also examined pesticides such as glyphosate and glufosinate, PFAS and phthalates.

The work was carried out as part of the FDA’s wider food-safety oversight, including Operation Stork Speed and the agency’s Closer to Zero effort. The FDA says the samples were selected to represent products sold at retail across the United States and were analyzed in agency laboratories.

These results do not mean that caregivers should change the way they prepare formula. Different products have different instructions, and the product label remains the practical reference for preparation, storage and use. Powdered, concentrated and ready-to-feed formulas are not interchangeable in how they are handled.

What the results mean for families

The FDA’s wording matters. The agency reported low overall findings and said most tested samples had undetectable or very low levels. It did not describe every sample as contaminant-free, and the results do not remove the need for ongoing surveillance. The FDA also said it will continue follow-up testing and consider whether additional action levels or other measures are needed.

Contaminants can enter food through environmental conditions, agricultural practices, manufacturing or packaging. Testing helps regulators identify broad patterns, but it cannot replace careful product identification and safe preparation at home. Families should continue to follow the instructions printed on the package, including the mixing directions and the use-by date.

The FDA’s Infant Formula Homepage brings together information about product oversight, labeling, preparation and safety alerts. It also explains that infant formula manufacturers must meet federal requirements and follow sanitary controls during production.

A practical kitchen checklist

The announcement is about testing, but it also provides a good reason to review the everyday routine around formula. These simple checks help keep the information from the laboratory connected to safer use at home.

Identify the product clearly. Keep the container, brand, product name, lot information and use-by date available. If a product is recalled, those details help determine whether it is affected.
Read the current label every time a product changes. Formula directions can differ between products and formats. Do not dilute, concentrate or substitute ingredients based on advice from social media or an informal online source.
Use clean equipment. Wash hands and prepare formula on a clean surface. Feeding bottles, nipples, caps and measuring tools should be cleaned and sanitized according to the manufacturer’s instructions and the advice given by your healthcare professional.
Respect the formula format. Ready-to-feed liquid, concentrated liquid and powder have different handling requirements. Never assume that a method suitable for one format also applies to another.
Keep the package information. Photographing the label or saving the lot code can make it easier to check an alert, contact the manufacturer or speak with a clinician about a concern.
Ask for individualized advice when needed. Premature infants, immunocompromised infants and babies with specific medical or nutritional needs may require guidance from a pediatrician or other qualified healthcare professional.

Why continued oversight still matters

The FDA’s announcement is significant because it brings together a large number of samples and measurements in one national surveillance effort. It also shows why food-safety monitoring is a continuing process. A single round of testing can identify the overall picture, while additional sampling helps regulators watch for changes in ingredients, suppliers, manufacturing conditions or environmental exposure.

For caregivers, the most useful takeaway is balanced: the FDA found low overall contaminant levels in the products it tested, but safe handling and attention to current product information remain essential. Checking the label, following its instructions, maintaining clean preparation equipment and responding to official alerts are practical steps that remain relevant while the agency continues its work.