Wash. Rev. Code § 10.79.140
(2) With the exception of those situations in which reasonable suspicion is deemed to be present under RCW 10.79.130(2), no strip search may be conducted without the specific prior written approval of the jail unit supervisor on duty. Before any strip search is conducted, reasonable efforts must be made to use other less-intrusive means, such as pat-down, electronic metal detector, or clothing searches, to determine whether a weapon, criminal evidence, contraband, or other thing is concealed on the body, or whether a health condition requiring immediate medical attention is present. The determination of whether reasonable suspicion or probable cause exists to conduct a strip search shall be made only after such less-intrusive means have been used and shall be based on a consideration of all information and circumstances known to the officer authorizing the strip search, including but not limited to the following factors:
[ 1986 c 88 s 3.]