A registrant must notify the Board of Pharmacy about a theft of controlled substances by filing which document?

Filing a DEA Form 106 is indeed the required action for a registrant to notify the Board of Pharmacy about the theft of controlled substances. This form is specifically designed for reporting the theft or significant loss of controlled substances, and it serves to inform both the Drug Enforcement Administration (DEA) and the relevant state authorities.

The importance of using DEA Form 106 lies in its comprehensive nature, which details the circumstances of the incident, the substances involved, and the quantity stolen. This ensures proper documentation and allows for a thorough investigation by the authorities. By using this standard form, the registrant provides the necessary information in a format that is recognized and accepted by federal and state regulations.

In contrast, the other options do not fulfill the specific requirement for reporting controlled substance thefts as laid out by the DEA and state laws, and they may pertain to different types of reporting or documentation requirements. Therefore, utilizing DEA Form 106 is crucial for compliance and proper notification in the case of theft.