How Do DOT Drug Tests Differ from Non-DOT Drug Tests?

DOT tests and non-DOT tests are kept apart under federal rules, and 49 CFR 40.13 states that DOT tests must be completely separate from non-DOT tests in all respects.

The rule also states that a DOT test takes priority and must be completed before a non-DOT test begins. For urine collections, any excess urine from the DOT test is discarded and a separate void is collected for the non-DOT test.

According to 40.13, employers must not use the federal Custody and Control Form (CCF) or the Alcohol Testing Form (ATF) in non-DOT programs, even with the DOT references crossed out. The rule also states that no one may conduct a DOT test on a person who is not a DOT-regulated employee, and that the results of a non-DOT test may not be used to change or disregard a DOT result.

Collection sites that offer DOT testing, non-DOT testing or both can be located in the MyDrugTesting.com directory with a search by location and service.