All milk—both regular and organic—is tested for antibiotics, both on the farm and at the processing plant. During 2014, nearly four million tests were conducted on milk samples to detect antibiotic or other drug residues, with less than 0.02% testing positive. In accordance with government regulations, any milk testing positive for antibiotics cannot be sold to the public. If a cow needs antibiotics, her milk is kept separate and doesn’t enter the bulk tank.