21 C.F.R. § 556.570 – Ractopamine.

(a) Acceptable daily intake (ADI). The ADI for total residue of ractopamine hydrochloride is 1.25 µg/kg of body weight per day.
(b) Tolerances. The tolerances for ractopamine (marker residue) are:
1. (1) Cattle.
  1. (i) Liver (target tissue): 0.09 ppm.
  2. (ii) Muscle: 0.03 ppm.
2. (2) Swine.
  1. (i) Liver (target tissue): 0.15 ppm.
  2. (ii) Muscle: 0.05 ppm.
3. (3) Turkeys.
  1. (i) Liver (target tissue): 0.45 ppm.
  2. (ii) Muscle: 0.1 ppm.
(c) Related conditions of use. See § 558.500 of this chapter.