21 CFR 556.720
§ 556.720 Tetracycline.
United States · 21 CFR — Food and Drugs · Status: effective
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- Citation
- 21 CFR 556.720, § 556.720 Tetracycline, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/87822
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Full text
(a) Acceptable daily intake (ADI). The ADI for total tetracycline residues (chlortetracycline, oxytetracycline, and tetracycline) is 25 µg/kg of body weight per day.
(b) Tolerances. The tolerances for the sum of tetracycline residues are:
(1) Cattle and sheep.
(i) Kidney and fat: 12 ppm.
(ii) Liver: 6 ppm.
(iii) Muscle: 2 ppm.
(2) Chickens and turkeys.
(i) Kidney and fat: 12 ppm.
(ii) Liver: 6 ppm.
(iii) Muscle: 2 ppm.
(3) Swine.
(i) Kidney and fat: 12 ppm.
(ii) Liver: 6 ppm.
(iii) Muscle: 2 ppm.
(c) Related conditions of use. See §§ 520.2345c and 520.2345d of this chapter.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.