DOT is done at request of an employer for a job, or to randomly screen an employee for drugs. This is a quick urine test which you must provide a sample to be sent away for - the purpose of screening for drug use The Office of Drug and Alcohol Policy and Compliance advises the Secretary on national and international drug testing and control issues and is the principal advisor to the Secretary on rules related to the drug and alcohol testing of safety-sensitive transportation employees in aviation, trucking, railroads, mass transit, pipelines, and other transportation industries. The Office publishes regulations and provides official interpretations on drug and alcohol testing, including how to conduct tests, and the evaluation and treatment procedures necessary for returning employees to duty after testing violations.
NON DOT – is essentially the same testing for drug and substances and at the request of someone other than department of transportation. The request for which substance comes from the persons requesting the test but all substances can be tested for.
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