U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 21Chapter IPart 320 - PART 320—BIOAVAILABILITY AND BIOEQUIVALENCE REQUIREMENTS
Subpart A [§ 320.1 - § 320.1] - Subpart A—General Provisions
Subpart B [§ 320.21 - § 320.63] - Subpart B—Procedures for Determining the Bioavailability or Bioequivalence of Drug Products
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