The Trump administration announced this month that hundreds of baby formula samples tested for toxic chemicals "meet a high safety standard," according to government officials. The testing was conducted by the U.S. Food and Drug Administration as part of an expanded program to monitor chemical contamination in infant formula products.

However, public health advocates have raised concerns about the administration's characterization of the results. Independent scientists who reviewed the testing data reported that a majority of the samples showed contamination with potentially harmful substances, including PFAS (per- and polyfluoroalkyl substances) and phthalates.

The independent scientists said the contamination findings and data gaps in the testing raise safety concerns, though they acknowledged some positive aspects of the results. They praised the FDA for expanding the chemical testing program and making the results available to the public.

PFAS are synthetic chemicals that have been linked to various health problems and are often called "forever chemicals" because they persist in the environment and human body. Phthalates are industrial chemicals used to make plastics more flexible and have raised concerns about potential developmental effects in children.

The FDA's expanded testing program represents an effort to monitor chemical contaminants in baby formula following previous safety incidents in the infant formula industry. The agency has not yet responded to the concerns raised by the independent scientists regarding the interpretation of the testing data.