U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 28, 2025

All TitlesTitle 21Chapter IPart 500 - PART 500—GENERAL
Subpart A - Subpart A [Reserved]
Subpart B [§ 500.23 - § 500.50] - Subpart B—Specific Administrative Rulings and Decisions
Subpart C [§ 500.51 - § 500.55] - Subpart C—Animal Drug Labeling Requirements
Subpart D [§ 500.65 - § 500.65] - Subpart D—Requirements for Specific Animal Drugs
Subpart E [§ 500.80 - § 500.92] - Subpart E—Regulation of Carcinogenic Compounds Used in Food-Producing Animals
Subpart F [§ 500.1410 - § 500.1410] - Subpart F—Methods for Detection of Residues of Carcinogenic Compounds Used in Food-Producing Animals
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