FDA found low contaminants in infant formula. Should parents switch?

Parents who saw the FDA’s April 29, 2026, infant formula announcement may be asking a practical question: should I change brands? For most families, the answer appears to be no.

The FDA said its largest U.S. contaminant testing effort so far found that most formula samples had undetectable or very low levels of heavy metals, pesticides, PFAS, and other chemicals. That is reassuring, but it is not the same as saying every can is identical or that risk is zero.

What the FDA tested

The agency tested 312 infant formula samples collected from retail stores between 2023 and 2025. The survey covered 16 brands, with multiple lots tested per brand, and included powdered, ready-to-feed, and concentrated liquid products.

According to the FDA, the testing looked for lead, mercury, cadmium, arsenic, 30 PFAS compounds, 318 pesticides, 21 phthalates, and one non-phthalate plasticizer. The agency said the overall results support confidence in the U.S. formula supply.

Some of the details were reassuring on their own. Mercury was not detected in 95% of samples. The FDA said 99% of samples had no detectable pesticides, and glyphosate and glufosinate were not detected in any sample. For PFAS, 25 of the 30 compounds tested were not found in any sample.

Why “low” and “undetectable” do not mean the same thing as “none”

These results are good news, but they need context. “Undetectable” means the amount, if present, was too small for the testing method to find. It does not necessarily mean a chemical is absolutely absent.

“Low” also does not mean the issue is settled forever. The FDA describes this work as a market-basket survey, which is meant to give a snapshot of products sold at retail. The agency says that kind of testing helps detect signals and trends, but it does not capture every possible difference from one production lot to another.

That is one reason the FDA says it plans more follow-up testing and is continuing work on action levels for contaminants in infant formula. In other words, the current results are reassuring, but they are not a brand ranking or a guarantee about every future batch.

A recent scoping review indexed in PubMed also helps explain why this monitoring continues to matter. It looked broadly at heavy metals in processed baby foods and infant formulas worldwide, reinforcing that contaminant surveillance is an ongoing public health issue. But that review was not a test of today’s U.S. formula market, so it should be treated as background context rather than a verdict on any one product now on store shelves.

Should parents switch brands now?

For most families, these results do not give a clear reason to rush out and change formulas. The American Academy of Pediatrics advises families to talk with their pediatrician before switching. That is especially important if a baby is doing well on a formula or uses a specialty product for a specific medical need.

Sudden switching can create new problems of its own, including feeding intolerance, confusion about preparation, and trouble finding a suitable replacement. If there is no recall and your child is tolerating the current formula, panic-switching based only on a headline is unlikely to help.

What matters day to day: safe preparation and storage

The CDC says formula safety is not only about what is in the container. How formula is prepared and stored matters too.

For most babies, powdered formula can usually be mixed with safe tap water by following the manufacturer’s instructions. The CDC says to measure the water first, then add the powder exactly as directed. Too much water can dilute nutrients. Too little water can strain a baby’s kidneys and digestive system.

The CDC also says prepared formula should be used within 2 hours of preparation and within 1 hour from the start of a feeding. If a bottle will not be used right away, refrigerate it promptly and use it within 24 hours. Throw out formula left in the bottle after a feeding, because bacteria can grow once saliva gets into it.

There are extra precautions for babies who are younger than 2 months old, were born prematurely, or have weakened immune systems. Powdered formula is not sterile, and the CDC says these infants can become seriously ill from bacteria such as Cronobacter. For them, the CDC recommends boiling water, waiting about 5 minutes, then mixing the formula and letting it cool before feeding.

What readers can do now

Keep using your baby’s current formula unless there is a recall or your pediatrician recommends a change.
Prepare formula exactly as directed, using safe water and clean bottles.
Use prepared formula quickly, refrigerate it promptly if needed, and discard leftovers after a feeding.
Check the container’s “Use By” date and follow storage instructions.
If you are thinking about switching formulas, talk with your pediatrician first, especially if your baby uses a specialty formula or has feeding problems.

Bottom line

The new FDA results are reassuring and do not support widespread panic about infant formula on U.S. store shelves. For most families, there is no strong reason to switch brands based on these test results alone.

The more practical takeaway is this: use formula safely, store it correctly, and ask a clinician if your baby has symptoms, feeding trouble, or a medical reason for a specialty product. Seek urgent care if your baby has trouble breathing, signs of dehydration, is hard to wake, or is not feeding normally.

Sources

Editorial note: Weence articles are researched from cited public-health, medical, regulatory, journal, and reputable news sources and may be drafted with AI assistance. They are checked for source support, clarity, and safety guardrails before publication.

This article is for general informational purposes only and is not medical advice. Research findings can be early or incomplete, and health guidance can change. Always talk with a qualified healthcare professional about personal symptoms, diagnosis, medications, vaccines, screenings, or treatment decisions. If you think you may have a medical emergency, call emergency services right away.