7 Pa. Code § 401.61
No person, except a Commission Veterinarian, racetrack veterinarian or veterinarian licensed by the Commission, may possess or use a hypodermic needle, hypodermic syringe capable of accepting a needle and injectable substances of any kind, type or description on the licensed racetrack grounds, in that person's custody, control or possession. If a person has a medical condition which makes it necessary to have a syringe while on the grounds of a racetrack, that person must request permission of the Judges or Stewards in writing, furnish a letter form a licensed physician explaining the necessity of the syringe and must comply with any conditions or restrictions set by the Judges or Stewards. Violations of this rule will subject the violator to a fine, suspension or both.
7 Pa. Code § 401.61