21 CFR § 556.760
Zeranol
June 25, 2020
(a) Acceptable daily intake (ADI). The ADI for total residue of zeranol is 1.25 µg/kg of body weight per day.
(b) Tolerances. The tolerances for zeranol are:
(1) Cattle. Edible tissues (excluding milk): Not required.
(2) Sheep. Edible tissues (excluding milk): 20 ppb.
(c) Related conditions of use. See §522.2680 of this chapter.