Oregon Revised Statutes Public Health and Safety § 462.200

(1) The Oregon Racing Commission by rule may require that chemical analysis be made of the urine, saliva, blood or other body substances of animals participating in race meets or persons required to obtain a license pursuant to this chapter. The cost of such a test shall be paid by the commission.

(2) The costs of photo patrol of races which the commission may require to assist the stewards in resolving disputes or claims or as being in the public interest, including the cost of the photo finish, shall be an expense of the commission.