21 C.F.R. § 556.540 Progesterone.
Title 21 - Food and Drugs
No residues of progesterone are permitted in excess of the following increments above the concentrations of progesterone naturally present in untreated animals: (a) In uncooked edible tissues of steers and calves: (1) 3 parts per billion for muscle. (2) 12 parts per billion for fat. (3) 9 parts per billion for kidney. (4) 6 parts per billion for liver. (b) In uncooked edible tissues of lambs: (1) 3 parts per billion for muscle. (2) 15 parts per billion for fat, kidney, and liver. [49 FR 13873, Apr. 9, 1984]
Title 21: Food and Drugs
PART 556—TOLERANCES FOR RESIDUES OF NEW ANIMAL DRUGS IN FOOD
Subpart B—Specific Tolerances for Residues of New Animal Drugs
§ 556.540 Progesterone.

