US lawFederal (United States)RegulationsTitle 21 CFR — Food and DrugsChapter I — FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICESPart 510 — NEW ANIMAL DRUGSSubpart C — Import Tolerances for Residues of Unapproved New Animal Drugs in Food510.20121 C.F.R. § 510.201Scope.Last amended: 2022Year: 2026Length: 37 wordsOfficial source Cite as 21 C.F.R. § 510.201 (2026)This subpart applies to tolerances for residues of new animal drugs not approved or conditionally approved for use in the United States, but lawfully used in another country and present in imported, animal-derived food and food products.Next21 C.F.R. § 510.202