Supplement test requirements for "positive identification" of ingredients sought by FDA.

SUPPLEMENT GMP GUIDELINES FOR "POSITIVE IDENTIFICATION" OF INGREDIENTS may be needed, FDA suggests in an advance notice of proposed rulemaking published in the Feb. 6 Federal Register. In requesting comments on aspects of GMPs that may not have been fully covered in the November 1995 industry-proposed version of supplement GMPs, FDA asks interested parties what might be considered "appropriate testing requirements to provide positive identification of dietary ingredients, particularly plant materials, used in dietary supplements."