If an employee refuses to sign Step 5, what action must the collector take?

When an employee refuses to sign Step 5 of the Chain of Custody Form (CCF), it is crucial for the collector to accurately document this refusal. By noting the refusal on the "Remarks" line of the CCF, the collector ensures that there is a record of the employee's actions during the process. This documentation serves multiple purposes: it provides transparency in the testing process, complies with regulatory requirements, and protects the integrity of the drug testing procedure. Each step in the CCF is critical for maintaining the chain of custody and ensuring that all actions are accounted for.

While notifying the employee of potential consequences, reporting the refusal to a supervisor, or ignoring the refusal might seem relevant in handling the situation, proper documentation on the CCF directly aligns with established protocols and legal guidelines, making it the most appropriate action to take.