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Code of Federal Regulations

Subpart I

Problems in Drug Tests

40.191What is a refusal to take a DOT drug test, and what are the consequences?40.193What happens when an employee does not provide a sufficient amount of specimen for a drug test?40.195What happens when an individual is unable to provide a sufficient amount of specimen for a pre-employment, follow-up, or return-to-duty test because of a permanent or long-term medical condition?40.197What happens when an employer receives a report of a dilute urine specimen?40.199What problems always cause a drug test to be cancelled?40.201What problems always cause a drug test to be cancelled and may result in a requirement for another collection?40.203What problems cause a drug test to be cancelled unless they are corrected?40.205How are drug test problems corrected?40.207What is the effect of a cancelled drug test?40.208What problems require corrective action but do not result in the cancellation of a test?40.209What procedural problems do not result in the cancellation of a test and do not require correction?40.210What kinds of drug tests are permitted under the regulations?