Testosterone.
21 C.F.R. § 556.710
in effectEffective: 2024-07-01(a) [Reserved]
(b) Residues. Residues of testosterone are not permitted in excess of the following increments above the concentrations of testosterone naturally present in untreated animals:
(1) Cattle. (i) Fat: 2.6 ppb.
(ii) Kidney: 1.9 ppb.
(iii) Liver: 1.3 ppb.
(iv) Muscle: 0.64 ppb.
(2) [Reserved]
(c) Related conditions of use. See § 522.2343 of this chapter.
Source: eCFRURL: https://www.ecfr.gov/api/versioner/v1/full/2024-07-01/title-21.xmlFetched: 7/26/2026