What is the formula to verify a DEA number?

The formula to verify a DEA number involves determining the validity of the number based on a specific calculation involving its digits. The correct choice, which states that the sum includes the 1st, 3rd, and 5th digits, aligns with how the DEA number is structured.

When calculating the validity of a DEA number, you first consider the digits located in the odd positions: the 1st, 3rd, and 5th digits. The sum of these digits contributes directly to the verification process. This step is critical as it sets the foundation for determining whether the DEA number is valid or not.

Following this, a separate calculation is made involving the even-positioned digits: the 2nd, 4th, and 6th. Each of these digits is multiplied by three before being summed. The result from this second calculation complements the first sum.

Ultimately, the two sums are combined to form a final calculation, which helps ascertain the legitimacy of the DEA number, with the last digit of the total needing to match the last digit of the DEA number.

Understanding this method is essential for pharmacy technicians, as it directly impacts the ability to correctly process prescriptions and ensure compliance with regulations regarding controlled substances.