Wash. Admin. Code § 260-40-120
(2) All horses must be properly tattooed by the thoroughbred racing protective bureau or an approved breed registry, or freeze marked in a manner that meets the standards of the National Crime Information Center.
A horse will not be allowed to start if a tattoo which is done physically is not applied at least twenty-four hours prior to scheduled post time.
[Statutory Authority: RCW 67.16.020. WSR 20-07-066, § 260-40-120, filed 3/13/20, effective 4/13/20; WSR 19-03-074, § 260-40-120, filed 1/14/19, effective 2/14/19. Statutory Authority: RCW 67.16.020 and 67.16.040. WSR 07-07-010, § 260-40-120, filed 3/8/07, effective 4/8/07; WSR 81-15-034 (Order 81-06), § 260-40-120, filed 7/10/81; Rules of racing, § 105, filed 4/21/61.]