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United States Food and Drug Administration requires all blood donations to be labeled "paid" or "volunteer" donors.
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Food and Drug Administration
United States federal agency
The United States Food and Drug Administration is a federal agency of the Department of Health and Human Services. The FDA is responsible for protecting and promoting public health through the control and supervision of food safety, tobacco products, caffeine products, dietary…Source: Wikipedia (CC BY-SA)
Blood donation
Blood withdrawal for use by another person via transfusion
A blood donation occurs when a person voluntarily has blood drawn and used for transfusions and/or made into biopharmaceutical medications by a process called fractionation. A donation may be of whole blood, or of specific components directly (apheresis). Blood banks often…Source: Wikipedia (CC BY-SA)