C-72.1, r. 4 - Rules respecting Standardbred horse races held at a professional race track

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341. Where under section 340 an official sample must be taken from a horse, the racing judges shall disqualify the horse in any of the following cases:
(1)  where an official sample could not be taken from that horse after the race;
(2)  where the test results of an official sample are positive;
(3)  where there was an exchange or a substitution of an official sample.
Decision 90-09-19, s. 341.