{"data":{"id":"us/21-cfr-556.52","jurisdiction":"us","citation":"21 CFR 556.52","heading":"Apramycin.","body":"(a) Acceptable daily intake (ADI). The ADI for total residue of apramycin is 25 µg/kg of body weight per day.\n(b) Tolerances. The tolerance for apramycin (marker residue) is:\n(1) Swine. Kidney (target tissue): 0.1 ppm.\n(2) [Reserved]\n(c) Related conditions of use. See §§ 520.110 and 558.59 of this chapter.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER E—ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS","PART 556—TOLERANCES FOR RESIDUES OF NEW ANIMAL DRUGS IN FOOD","Subpart B—Specific Tolerances for Residues of Approved and Conditionally Approved New Animal Drugs"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"8d97d9e2b5d06b4deed26fb63faad556407ce5c979128a15e4baf556aabb0df3","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-556.50","next":"us/21-cfr-556.60"},"notice":"GroundRules: Original legal text. Not legal advice."}