C-72.1, r. 5 - Rules respecting Standardbred horse races held at an amateur race track

Full text
254. Where the racing judge requested an official sample taken from a horse declared in a race, the racing judge disqualifies 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 96-07-24, s. 254.