(a) Before sending a specimen from a horse to a testing laboratory, the commission veterinarian shall determine whether the specimen is of sufficient quantity to be split. If there is sufficient quantity, the commission veterinarian or the commission veterinarian's designee shall divide the specimen into two parts. If the specimen is of insufficient quantity to be split, the commission veterinarian may require the horse to be detained until an adequate amount of urine can be obtained. If the commission veterinarian ultimately determines the quantity of the specimen obtained is insufficient to be split, the commission veterinarian shall certify that fact in writing and submit the entire specimen to the laboratory for testing.     
      (b) The commission veterinarian or commission veterinarian's designee shall retain custody of the portion of the specimen that is not sent to the laboratory. The veterinarian or designee shall store the retained part in a manner that ensures the integrity of the specimen.     
      (c) An owner or trainer of a horse which has received a positive result on a drug test may request, in writing, that the retained serum or urine, whichever provided the positive result, be submitted for testing to a Commission approved and listed laboratory that is acceptable to the owner or trainer. The owner or trainer must notify the executive secretary of the request not later than 48 hours after notice of the positive result. Failure to request the split within the prescribed time period will be deemed a waiver of the right to the split specimen.     
      (d) If the retained part of a specimen is sent for testing, the commission staff shall arrange for the transportation of the specimen in a manner that ensures the integrity of the specimen. The person requesting the tests shall pay all costs of transporting and conducting tests on the specimen. To ensure the integrity of the specimen, the split specimen must be shipped to the selected laboratory no later than 10 days after the day the trainer is notified of the positive test. Subject to this deadline, the owner or trainer of the horse from whom the specimen was obtained is entitled to be present or have a representative present at the time the split specimen is sent for testing.     
      (e) If the test on the split specimen confirms the findings of the original laboratory, it is a prima facie violation of the applicable provisions of the chapter.     
      (f) If the test on the split specimen portion does not substantially confirm the findings of the original laboratory, the stewards may not take disciplinary action regarding the original test results.     
      (g) If an act of God, power failure, accident, labor strike, or any other event, beyond the control of the Commission, prevents the split from being tested, the findings of the original laboratory are prima facie evidence of the condition of the horse at the time of the race.     
     Source Note:        The provision of this §319.362 adopted to be effective August 14, 1989, 14 TexReg 3807; amended to be effective February 1, 1995, 19 TexReg 10357; amended to be effective November 1, 1998, 23 TexReg 10642; amended to be effective October 29, 2000, 25 TexReg 10562; amended to be effective April 1, 2001, 26 TexReg 2155; amended to be effective March 13, 2002, 27 TexReg 1732