Medical grade plastics include materials with either an FDA approval and/or USP Class VI approval.
USP (U.S. Pharmacopoeia) Class VI
judges the suitability of plastic material intended for use as containers or accessories for parenteral preparations. Suitability under USP Class VI is typically a base requirement for medical device manufacturers.
FDA (Food & Drug Administration)
takes responsibility for determining whether and how manufactured materials may be used in contact with food products. Definitions for proper use are found in a series of regulations published annually under Government Regulations (CFR) 21.