21 C.F.R. § 556.720
Tetracycline.
Cite as 21 C.F.R. § 556.720 (2026)
(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.
- Cross-references to the CFR
- 520.2345c