11VAC10-180-90: Bicarbonate testing

A. Generally. The feeding or administration to a horse on race day of any bicarbonate-containing substance or other alkalinizing substance that effectively alters the serum or plasma pH or concentration of bicarbonates or carbon dioxide in the horse is prohibited.

B. Test values. A serum or plasma total carbon dioxide level exceeding 37.0 millimoles per liter constitutes a positive test.

C. Testing procedure. The stewards or commission veterinarian may, at their discretion and at any time, order the collection of test samples from any horse present within the enclosure for determination of serum or plasma pH or concentration of bicarbonate, carbon dioxide, or electrolytes. Preracing testing or post-race testing may be done at a time and manner directed by the commission veterinarian. Whether prerace or post-race, the sample shall consist of blood taken from the horse to determine the serum or plasma total carbon dioxide concentration. If the chief racing chemist finds that the total carbon dioxide levels in the sample exceed the standard test values of 37.0 millimoles per liter, then he shall inform the commission veterinarian of the positive test results.

D. Split samples prohibited. The procedures for split sample testing shall not apply to bicarbonate testing procedures.