21 C.F.R. § 556.345
Ketoprofen
(a) Acceptable daily intake (ADI). The ADI for total residue of ketoprofen is 5 µg/kg of body weight per day.
(b) Tolerances. The tolerances for ketoprofen (marker residue) are:
(1) Cattle. (i) Kidney (target tissue): 0.36 ppm.
(ii) [Reserved]
(c) Related conditions of use. See §§ 522.1225 and 522.2632 of this chapter.