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GUIDANCE DOCUMENT

Handling and Retention of Bioavailability BA and Bioequivalence BE Testing Samples Draft Guidance for Industry March 2024

Download the Draft Guidance Document
Draft Level 1 Guidance

Not for implementation. Contains non-binding recommendations.

Docket Number:
FDA-2002-D-0176
Issued by:
Guidance Issuing Office
Center for Drug Evaluation and Research

This guidance is intended to provide recommendations for study sponsors and/or drug manufacturers, contract research organizations (CROs), site management organizations (SMOs), clinical investigators, and independent third parties regarding the procedure for handling reserve samples from relevant bioavailability (BA) and bioequivalence (BE) studies, as required by 21 CFR 320.38 and 320.63. The guidance highlights (1) how the test article and reference standard for BA and BE studies should be distributed to the testing facilities, (2) how testing facilities should randomly select samples for testing and material to maintain as reserve samples, and (3) how the reserve samples should be retained. The guidance also clarifies and emphasizes points addressed in §§ 320.38 and 320.63.

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You can submit online or written comments on any guidance at any time (see 21 CFR 10.115(g)(5))

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Dockets Management
Food and Drug Administration
5630 Fishers Lane, Rm 1061
Rockville, MD 20852

All written comments should be identified with this document's docket number: FDA-2002-D-0176.

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