When receiving Schedule IV controlled substances, the pharmacy technician should check the drugs against the:

The narcotic inventory is used to keep track of controlled substances already in stock at the pharmacy. While it is important for overall inventory management, it does not provide the necessary details for verifying incoming shipments of Schedule IV substances, making it unsuitable as a reference for this specific task.

A formulary is a list of medications approved for use within a particular healthcare setting, often including information on cost and preferred medications. However, it does not serve as a document for verifying the receipt of specific controlled substances, as it lacks the detailed transaction information needed for this purpose.

The DEA Form 222 is specifically used for the ordering and transfer of Schedule I and II controlled substances. Since Schedule IV substances are not covered under this form, it cannot be utilized for checking the receipt of these medications, making it an inappropriate choice for this scenario.