The Food and Drug Administration said it found traces of the toxic contaminant melamine in one of the 77 samples of infant formula it tested. A trace amount is defined as less than 250 parts per billion, said FDA spokeswoman Judy Leon according to CNN.

"There's no basis for concern because we're talking about trace levels that are so low ... that there's absolutely no risk," Leon said.

The FDA decided to carry out the tests after the incident that occurred in China. Melamine-tainted formula was found in China a few months ago and thousands of children fell ill and several died due to contamination. The chemical substance called melamine is used to manufacture plastics, but it was also found in milk powder, wheat gluten and several other ingredients made in China ranging from pet food to candy.

The manufacturers most likely used melamine to make foods appear richer in protein during testing, a cheap but very dangerous method. The chemical substance can severely damage kidneys.

Don’t panic! The FDA established that all the U.S. infant formula manufacturer aren’t using any Chinese ingredients in the process. The latest results of the testing made by the FDA are probably a result of the manufacturing process or what comes into contact with formula in cans.

“It's not adulteration and it's not contamination," said Leon. She wouldn’t reveal the manufacturer of the sample found to contain melamine.

A spokesperson for the International Formula Council trade group said that the quantity found was below levels deemed safe in infants by the governments of China, Malaysia, the Philippines, Hong Kong, Canada and New Zealand. Similar levels of melamine can be found in lots of food, the spokesperson said.