November 14, 2025

In the world of DOT drug and alcohol testing, follow-up testing plans are a critical part of ensuring safety and supporting recovery. But what happens when the plan gets compromised—like when an employer shares the testing schedule with the employee?
Let’s break down what the rules say, what SAPs can do, and why it’s so important to protect the integrity of the process.
DOT regulations are clear: employers, SAPs, and service agents must not share the follow-up testing schedule with the employee. That includes:
Why? Because follow-up testing is meant to be unannounced and unpredictable. If the employee knows when they’ll be tested, the purpose of the plan is undermined.
You can find this rule in DOT Rule 49 CFR Part 40 Section 40.307.
If a SAP learns that the employer has shared the testing schedule with the employee, they can—and should—revise the follow-up testing plan. This might include:
When sending the revised plan, SAPs should include the regulatory citation to reinforce why the change is necessary.
Here’s something many people don’t realize: follow-up testing plans are not stored in the DOT Clearinghouse. That means:
That’s why it’s crucial for SAPs to:
Follow-up testing is a powerful tool—but only if it’s used correctly. If the schedule is shared with the employee, the SAP has the authority to revise the plan and reinforce the rules. And since the plan isn’t stored in the Clearinghouse, SAPs play a key role in preserving the integrity of the process.
So whether you’re a SAP, employer, or driver—stay informed, stay compliant, and keep those records safe.


