§556.113. Ceftiofur.
21 C.F.R. § 556.113
Acceptable daily intake and acute reference dose—
Acceptable daily intake (ADI). The ADI for total residue of ceftiofur is 30 µg/kg of body weight per day.
Acute reference dose (ARfD). The ARfD for total residue of ceftiofur is 0.830 mg/kg of body weight.
Tolerances. The tolerances for desfuroylceftiofur (marker residue) are:
Cattle.
Kidney (target tissue)— 0.4 ppm.
Liver— 2 ppm.
Muscle— 1 ppm.
Milk— 0.1 ppm.
Chickens and turkeys. Edible tissues (excluding eggs): Not required.
Goats.
Kidney (target tissue)— 8 ppm.
Liver— 2 ppm.
Muscle— 1 ppm.
Milk— 0.1 ppm.
Sheep. Edible tissues (excluding milk): Not required.
Swine.
Kidney (target tissue)— 0.25 ppm.
Liver— 3 ppm.
Muscle— 2 ppm.
Notes, amendments, and revision history
Authority
Authority: 21 U.S.C. 342, 360b, 371.
Source
Source: 84 FR 32993, July 11, 2019, unless otherwise noted.