Coca-Cola said it alerted the Food and Drug Administration after it found some Brazilian growers had sprayed their orange trees with a fungicide that is not approved for use in the U.S.
The FDA had said Monday that an unnamed juice company detected low levels of the fungicide in orange juice products after testing its own and competitors' products.
Most orange juice products made by Coke and other companies contain a blend of juice from different sources including Brazil.
Atlanta-based Coca-Cola did not say which products it tested contained the fungicide. Its own orange juice products include Simply Orange and Minute Maid.
The FDA has said the low levels found of the fungicide aren't a safety risk but they will increase testing to make sure the contamination isn't a problem.