Section 556.286 - Flunixin(a)Acceptable daily intake (ADI). The ADI for total residue of flunixin is 0.72 [MICRO]g/kg of body weight per day.(b)Tolerances. The tolerances for flunixin are: (1)Cattle.(i) Liver (target tissue): 125 ppb flunixin free acid (marker residue).(ii) Muscle: 25 ppb flunixin free acid.(iii) Milk: 2 ppb 5-hydroxy flunixin (marker residue).(2)Swine.(i) Liver (target tissue): 30 ppb flunixin free acid (marker residue).(ii) Muscle: 25 ppb flunixin free acid.(c)Related conditions of use. See §§ 522.956 , 522.970 , 522.1664 , and 524.970 of this chapter. 83 FR 13635 , 3/30/2018; 84 FR 32993 , 9/9/2019