Oregon Revised Statutes Mental Health and Developmental Disabilities; Alcohol and Drug Treatment § 430.545

(1) Evaluation sites provided for under ORS 430.450 to 430.555 shall conduct such procedures as may be necessary to determine if an individual is a drug-dependent person. A person shall be evaluated only with that person's written consent. Subject to approval of the Oregon Health Authority, the director of a treatment facility or the director of an evaluation site may designate personnel to provide treatment or evaluation as appropriate under the lawful limitations of their certification, licensure or professional practice.

(2) Antagonist drugs may be administered for diagnosis of addiction by a registered nurse at an approved site when the nurse has completed required training and a physician is available on call. Antagonist drugs shall not be administered without informed written consent of the person.