No residues of testosterone, resulting from the use of testosterone propionate, are permitted in excess of the following increments above the concentrations of testosterone naturally present in untreated animals:
(a) In uncooked edible tissues of heifers:
(1) 0.64 part per billion in muscle.
(2) 2.6 parts per billion in fat.
(3) 1.9 parts per billion in kidney.
(4) 1.3 parts per billion in liver.
(b) [Reserved] [52 FR 27683, July 23, 1987]