21 CFR § 556.720
Tetracycline
June 25, 2020
(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.
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