Every two (2) years following the date on which the initial inventory is taken by a registrant, the registrant shall take a new inventory of all stocks of controlled dangerous substances on hand. The biennial inventory may be taken:

1. (1) on the day of the year on which the initial inventory was taken; or
2. (2) on the registrant's regular general physical inventory date, as long as the date chosen does not exceed two (2) years from the last inventory date.

Amended at 29 Ok Reg 1319, eff 6-25-12