How to Know If a C/TPA Is Legit: A Checklist for Drivers, Employers, and SAPs

A Consortium/Third-Party Administrator (C/TPA) is a service agent that helps employers (and sometimes owner-operators) manage DOT drug and alcohol testing programs. Their role depends on who they’re working with and why.

The 3 Types of C/TPA Roles

1. RTD Workaround Only (Unemployed Driver)
   
   1. Helps a driver take one RTD test to clear their Clearinghouse record.
   2. No follow-up testing allowed.
   3. Driver registers as an owner-operator just for this purpose.
   4. Once hired, the employer takes over the follow-up testing plan.
2. Independent Owner-Operator
   
   1. A true owner-operator (with their own truck and DOT number) must join a C/TPA.
   2. The C/TPA helps manage the full testing program, including random and follow-up testing.
   3. This is not part of the workaround—it’s standard practice.
3. Employer Support
   
   1. Employers may contract with a C/TPA to help run their testing program.
   2. The C/TPA can handle logistics, but the employer must still:
      
      1. Pull random testing dates
      2. Trigger follow-up tests
      3. These duties cannot be delegated to the C/TPA

Red Flags: When a C/TPA Isn’t Legit

Watch out for C/TPAs that:

1. Offer to do follow-up testing for unemployed drivers
2. Claim they can handle everything without employer involvement
3. Don’t explain the difference between RTD-only services and full program management
4. Don’t reference Appendix C of Part 40, which outlines their legal limits

If a C/TPA says they can do your follow-up testing before you’re hired—that’s a scam. Those tests won’t count, and you’ll have to start over once you get a job.

To ensure accurate and reliable testing for DOT-look-alike drug tests, you can order a test near you by contacting: rtdctpa@gmail.com. They are a reliable nationwide company.

Final Thoughts

Before you work with a C/TPA, ask yourself:

1. Are they helping with just the RTD test?
2. Are they supporting a true owner-operator?
3. Are they assisting an employer with a full testing program?

Each scenario has different rules—and only the last two involve follow-up testing. If you’re unsure, ask questions, check credentials, and always refer back to the regulations.

Your safety, your wallet, and your career depend on it.