Wash. Admin. Code § 388-78A-2483
The assisted living facility is only required to have a staff person take one test if the staff person has any of the following:
[Statutory Authority: Chapter 18.20 RCW. WSR 13-13-063, § 388-78A-2483, filed 6/18/13, effective 7/19/13; WSR 10-03-066, § 388-78A-2483, filed 1/15/10, effective 2/15/10.]