Final answer:
Controlled substance dispensaries register with the DEA every three years as part of federal compliance requirements. This process is akin to the regulatory quality control found in pharmaceutical manufacturing.
Step-by-step explanation:
The subject of this question is Medicine, and it pertains to the regulations for controlled substance dispensaries such as pharmacies and practitioners. According to the regulations set by the Drug Enforcement Administration (DEA), controlled substance dispensaries must register with the DEA every three years to maintain compliance with federal law. This periodic registration is essential to ensuring that the dispensaries are operating legally and are being monitored for the appropriate handling, storage, and distribution of controlled substances. The question links to the idea of quality control and regulatory compliance, much like a quality control chemist at a pharmaceutical company ensures the accuracy and precision of machines dispensing medication.