RCW 79A.60.700: Refusal to submit to certain tests—Not admissible as evidence—Penalty.

(1) The refusal of a person to submit to a test of the alcohol concentration, THC concentration, or presence of any drug in the person's blood or breath is not admissible into evidence at a subsequent criminal trial.

(2) A person's refusal to submit to a test or tests pursuant to RCW 79A.60.040(4)(a) constitutes a class 1 civil infraction under RCW 7.80.120.