Whenever the test described in this section and §§ 183.351-183.354 discloses the presence of a drug, stimulant, depressant or sedative, in an amount whatsoever, it shall be presumed that the same was administered by the person having the control or care or custody, or both, of the horse and that the administering was done with the intent to affect the speed or condition of the horse and the result of the race in which it participated.
58 Pa. Code § 183.355
This section cited in 58 Pa. Code § 183.361 (relating to winnings when rule is violated).