(a) Except as otherwise provided by this section, a horse or greyhound participating in a race may not carry in its body a prohibited drug, chemical, or other substance.
(b) Furosemide at or below the approved tolerance level in a horse that has been admitted to the furosemide program is permissible. The maximum permissible concentration shall be published on the list of therapeutic drugs posted under subsection (c) of this section.
(c) Therapeutic drugs that are necessary for treatment of illness or injury in race animals are permissible, provided that:
(1) the therapeutic drug is on a written list of permissible levels of therapeutic medications that is approved by the executive secretary, maintained by the commission veterinarian, and posted in the commission veterinarians' office; and
(2) the concentration of the drug does not exceed the maximum permissible concentration on the written list of therapeutic drugs.
(d) Except as otherwise provided by this chapter, a person may not administer or cause to be administered to a horse or greyhound a prohibited drug, chemical, or other substance, by injection, oral or topical administration, rectal infusion or suppository, nasogastric intubation, inhalation, or any other means during the 24-hour period before the post time for the race in which the animal is entered.
(e) A positive finding by a chemist of a prohibited drug, chemical, or other substance in a test specimen of a horse or greyhound collected on the day of a race, subject to the rules of the commission relating to split specimens, is prima facie evidence that the prohibited drug, chemical, or other substance was administered to the animal and was carried in the body of the animal while participating in a race.
(f) Except as provided in paragraph (1) of this subsection, beta-agonists are prohibited substances and shall not be administered to a horse participating in racing at any time.
(1) A horse may only be administered beta-agonists if:
(2) A horse that has been administered beta-agonists under paragraph (1) of this subsection shall be placed on the Veterinarian's List for a period ending not less than 30 days after the last administration of the drug as prescribed, subject to a negative test for beta-agonist drugs before being removed from the list.
Source Note: The provisions of this §319.3 adopted to be effective August 14, 1989, 14 TexReg 3802; amended to be effective November 29, 1990, 15 TexReg 6589; amended to be effective April 3, 1991, 16 TexReg 1748; amended to be effective November 22, 1991, 16 TexReg 6459; amended to be effective August 3, 1992, 17 TexReg 5084; amended to be effective November 1, 1998, 23 TexReg 10637; amended to be effective November 1, 2001, 26 TexReg 8512; amended to be effective December 8, 2011, 36 TexReg 8371; amended to be effective January 1, 2014, 38 TexReg 9528; amended to be effective September 10, 2018, 43 TexReg 5680; amended to be effective November 20, 2019, 44TexReg 7045; amended to be effective June 29, 2022, 47 TexReg 3683