Oregon Revised Statutes Procedure in Criminal Matters Generally § 146.113

(1) A medical examiner or district attorney may, in any death requiring investigation, order samples of blood or urine taken for laboratory analysis.

(2) When a death requiring an investigation as a result of a motor vehicle accident occurs within five hours after the accident and the deceased is over 13 years of age, a blood sample shall be taken and forwarded to an approved laboratory for analysis. Such blood or urine samples shall be analyzed for the presence and quantity of ethyl alcohol, and if considered necessary by the State Medical Examiner, the presence of controlled substances.

(3) Laboratory reports of the analysis shall be made a part of the State Medical Examiner's and district medical examiner's files.