date:May 20, 2014
out drug residues found in a cow it sold for slaughter as food. In part, the warning letter to the dairy farm stated: analysis of tissue samples collected from this animal identified the presence of tilmicosin at 1.967 parts per million (ppm) in the liver. FDA has established a tolerance of 1.2 ppm for residues of tilmicosin in the liver tissues of cattle as codified in Title 21, Code of Federal Regulations (C.F.R.), Section 556.735 (21 C.F.R. 556.735). However, this tolerance does not apply to