How often is inventory of controlled substances required to be taken?

The requirement for taking an inventory of controlled substances hinges on compliance with federal regulations as outlined by the Drug Enforcement Administration (DEA). A biennial inventory, or an inventory conducted every two years, is mandated for registrants who handle controlled substances. This regular assessment ensures that a physician, pharmacist, or facility maintains accurate records of all controlled substances they possess, including those that are on hand and any that may have been destroyed or otherwise disposed of.

The two-year interval allows for an adequate time frame to assess the stock and ensures that any discrepancies can be identified and addressed in a timely manner. This frequent review is crucial for maintaining compliance with regulatory standards and safeguarding against theft, misuse, or loss of controlled substances.

In contrast, the other time frames specified—annual, semiannual, or every five years—do not align with the regulatory requirements set by the DEA, making them incorrect. The emphasis on a two-year cycle reflects the balance between sufficient oversight and the practical considerations of inventory management for entities that handle controlled substances.