(a) For each Texas Derby, the commission shall appoint a state veterinarian to conduct a prerace examination of each horse entered in the race to determine whether the horse:
(1) is healthy; and
(2) meets standards set by commission rule for racing.
(b) The examination may:
(1) be conducted at any time before the race; and
(2) include any procedure that the state veterinarian considers necessary to make the determination required by Subsection (a).