7 Pa. Code § 401.13 – Retesting procedures.

(a) The Commission Veterinarian or designee shall take the rectal temperature of the horse who had elevated Base Excess (BE) levels. The horse’s temperature will be recorded on the Commission Veterinarian’s control sheet. The Commission Veterinarian shall extract a second blood sample from the horse.
(b) The horse’s second blood sample shall be tested three times utilizing the same procedures and blood gas analyzer machine as the horse’s initial blood sample. If the horse’s three retests still indicate a high BE level, it shall be considered a positive test and the following will occur:
1. (1) The Commission Veterinarian shall inform the owner, trainer or groom present of the positive test;
2. (2) The Commission’s investigator shall advise the Board of Judges of the BE positive test; and
3. (3) The Board of Judges will scratch the horse from the race.
(c) Should any of the three retests fall below the Commission’s established threshold, it shall be considered negative and the horse shall be permitted to race.