When validating a DEA number, which letter should the second character represent?

The correct answer is that the second character of a DEA number should represent the first letter of the prescriber's last name. This is a key component in the validation process of a DEA number, which is essential in ensuring that prescriptions for controlled substances are authorized.

When a DEA number is structured, it consists of two letters followed by seven digits. The first letter identifies the type of registrant, such as a physician, while the second letter acts as an identifier that, specifically, will correlate with the prescriber's last name. This serves as a checkpoint to confirm that the DEA number is indeed associated with a legitimate prescriber, aiding in preventing prescription fraud and promoting safe medication practices.

Understanding this structure helps pharmacy technicians quickly verify the legitimacy of a prescribed medication and ensure their compliance with regulations governing controlled substances.