(1) A facility shall conduct its own separate inventory of prescription drugs when it closes in accordance WAC 246-945-480.

(2) A facility shall conduct an inventory of controlled substances every two years.

(3) A facility shall conduct its own separate inventory of controlled substances in the following situations:

(a) Within thirty days of designating a responsible pharmacy manager. The incoming responsible pharmacy manager, or designee, shall conduct a complete controlled substance inventory.

(b) On the effective date of an addition of a substance to a schedule of controlled substances. Each facility that possesses the substance shall take an inventory of the substance on hand, and thereafter, include the substance in each inventory.

(4) A pharmacy that exclusively stores, dispenses or delivers legend drugs, including controlled substances, without a pharmacist on-site shall maintain a perpetual inventory.

(5) A pharmacy that exclusively stores, dispenses or delivers prescription drugs without pharmacy ancillary personnel physically on-site shall maintain a perpetual inventory.