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United States Department of Transportation United States Department of Transportation

How do I change a DOT drug and/or alcohol test to a non-DOT test when I discover an error?

View the full FAQ here.

According to the Department of Transportation’s (DOT) Procedural regulation, Title 49 CFR part 40, §§ 40.13(g), 40.41(a), and 40.227(a), an employer is prohibited from using the Federal custody and control form (CCF) and DOT alcohol testing form (ATF) for a non-DOT test.  If you discover that you or your collector used a Federal CCF or DOT ATF on a non-DOT test for a non-covered employee and you want it changed, you may contact the FAA’s Drug Abatement Division for guidance.   

However, if the error concerns a test on a safety-sensitive employee, you are prohibited from cancelling the test in accordance with 49 CFR §§ 40.209(b)(10) and 40.275(b) and must contact our office to request a change.  We will conduct a case-by-case determination regarding errors that affect a safety-sensitive employee’s test regardless of the result and provide a written decision and instructions. 

To request guidance or change on a DOT drug or alcohol test result to a non-DOT result, you must write to and provide the following:

  • A statement to explain whether it was an error on a non-covered employee, or you made a regulatory error by incorrectly testing a safety-sensitive employee for drugs and/or alcohol; and
  • A copy of the result. 

Please note that a service agent cannot make a request on your behalf.

If you have any further questions or need additional guidance that is more specific to your situation, please contact the FAA Drug Abatement Division at (202) 267-8442 or

Please visit our Web site to learn more about our program.

Applicable Regulations: