What is the key difference between a DOT-regulated drug test and a non-DOT workplace drug test?
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A
DOT tests follow strict federal procedures under 49 CFR Part 40, while non-DOT tests follow employer or state-defined policies
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B
DOT tests use blood specimens exclusively, while non-DOT tests use urine only
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C
Non-DOT tests always include alcohol testing, while DOT tests do not
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D
DOT tests are conducted by the employer, while non-DOT tests require a licensed physician