The fda tests dietary supplements for purity and potency true or false

The answer is true.

FDA (The Food and Drug Administration) is a federal agency of the United States Department of Health and Human Services, which is responsible for protecting and promoting public health. FDA controls and regulates food safety (including dietary supplements, additives), drugs, vaccines, biologic (blood transfusions, gene therapy products), medical devices (prosthetics, dental devices), cosmetics, veterinary products, tobaccos.