Final answer:
The process of using COS to purchase controlled substances involves the purchaser enrolling with the DEA for a digital certificate, signing the order digitally, verification by the supplier, product shipment, and the supplier's report to the DEA.
Step-by-step explanation:
The correct order for using the Controlled Substance Ordering System (COS) to purchase controlled substances from a wholesaler is as follows:
- The purchaser enrolls with the DEA to receive a digital certificate.
- The purchaser digitally signs the COS order.
- The supplier verifies the purchaser's digital certificate.
- The supplier sends the controlled substances to the purchaser.
- The Supplier reports the order information to the DEA.
This process ensures the secure and legal transaction of controlled substances, maintaining proper records and abiding by regulatory compliance.