Indiana Code Title 15. Agriculture and Animals § 15-18-1-16

(1) Except as provided in subdivision (2), milk shall be screened for drug residues as required by this chapter and rules adopted by the board.  The board may adopt rules governing testing for drug residues in milk that are at least as effective in protecting the public health as the national standards adopted by the National Conference on Interstate Milk Shipments.

(2) Milk from manufacturing grade dairy farms shall be tested for drug residues as required by this chapter and rules adopted by the board.

(3) All milk that tests positive for drug residues must be disposed of in a manner that removes it from the human and animal food chain or that acceptably reconditions the milk under United States Health and Human Services, Food and Drug Administration compliance policy guidelines.  In all cases of drug residue violations, a producer may not resume shipping milk until a drug test conducted by an officially designated laboratory shows the producer's milk is negative for drug residues and the test results are reported to the office of the state veterinarian.

(4) All positive drug residue test results must be called into the office of the state veterinarian immediately, and a written report of the test results must be faxed or delivered to the office of the state veterinarian not later than twenty-four (24) hours after the test.  The producer whose milk tested positive must be notified of the positive drug residue test immediately.  The company that conducted the test is responsible for the reporting requirements in this subdivision.