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  1. NCMS Contractor Support
  2. DOT Regulations - 49 CFR Part 40
  3. Subpart I—Problems in Drug Tests

Subpart I—Problems in Drug Tests

  • § 40.191 What is a refusal to take a DOT drug test, and what are the consequences?
  • Section 40.191 Questions and Answers
  • § 40.193 What happens when an employee does not provide a sufficient amount of specimen for a drug test?
  • Section 40.193 Questions and Answers
  • § 40.195 What 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?
  • § 40.197 What happens when an employer receives a report of a dilute urine specimen?
  • Section 40.197 Questions and Answers
  • § 40.199 What problems always cause a drug test to be cancelled?
  • § 40.201 What problems always cause a drug test to be cancelled and may result in a requirement for another collection?
  • § 40.203 What problems cause a drug test to be cancelled unless they are corrected?
  • Section 40.203 Questions and Answers
  • § 40.205 How are drug test problems corrected?
  • § 40.207 What is the effect of a cancelled drug test?
  • § 40.208 What problems require corrective action but do not result in the cancellation of a test?
  • § 40.209 What procedural problems do not result in the cancellation of a test and do not require correction?
  • Section 40.209 Questions and Answers
  • § 40.210 What kinds of drug tests are permitted under the regulations?

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