21 CFR § 556.36
Altrenogest
June 25, 2020
(a) Acceptable daily intake (ADI). The ADI for total residue of altrenogest is 0.04 µg/kg of body weight per day.
(b) Tolerances. The tolerances for altrenogest (marker residue) are:
(1) Swine.
(i) Liver (target tissue): 4 ppb.
(ii) Muscle: 1 ppb.
(2) [Reserved]
(c) Related conditions of use. See §520.48 of this chapter.