WAC 388-78A-2483
WAC 388-78A-2483. Tuberculosis—One test
The assisted living facility is only required to have a staff person take one test if the staff person has any of the following:
(1) A documented history of a negative result from a previous two step skin test done no more than one to three weeks apart; or
(2) A documented negative result from one skin or blood test in the previous twelve months.