Which documents must be retained for C-II controlled substance purchases?

For purchases of C-II controlled substances, it is essential to retain the DEA 222 form along with the invoice. The DEA 222 form is used specifically for the ordering and transfer of Schedule II controlled substances. This form serves as a record of the transaction and is a regulatory requirement to ensure compliance with federal laws governing controlled substances.

Retaining the invoice is also critical, as it provides a detailed account of the purchase transactions, including the quantity and type of controlled substances involved. Together, the DEA 222 and the invoice serve as primary documentation that satisfies both the regulatory requirements for accountability and tracking of C-II substances, as well as necessary documentation for potential audits or investigations.

While an inventory log is important for tracking the overall stock of controlled substances in a pharmacy, it does not specifically satisfy the requirements for documenting purchases. Similarly, patient records are vital for clinical and regulatory reasons but are unrelated to the documentation of purchasing C-II substances. Therefore, both the DEA 222 form and the invoice are mandatory for maintaining proper records for C-II controlled substance purchases.