Pennsylvania Code
Title 7 - AGRICULTURE
Part VIII - State Horse Racing Commission
Subpart E - Thoroughbred Rules of Racing (Horse)
Chapter 305 - RULES OF THOROUGHBRED RACING-TEMPORARY REGULATIONS
WEIGHTS, PENALTIES AND ALLOWANCES
Section 305.255 - Identification

(a) The trainer or exercise rider shall bring each horse scheduled for an official workout to be identified by the clocker or clocker's assistant immediately prior to the workout.

(b) The horse shall be properly identified by its lip tattoo, unique implanted microchip (ISO 11784), freeze brand or other identification method approved by the breed registry and the Commission immediately prior to participating in an official timed workout.

(c) The trainer or trainer's designee shall be required to identify the distance the horse is to be worked and the point on the track where the workout will start.