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  1. NCMS Contractor Support
  2. DOT Regulations - 49 CFR Part 40
  3. Subpart H—Split Specimen Tests

Subpart H—Split Specimen Tests

  • § 40.171 How does an employee request a test of a split specimen?
  • Section 40.171 Questions and Answers
  • § 40.173 Who is responsible for paying for the test of a split specimen?
  • § 40.175 What steps does the first laboratory take with a split specimen?
  • § 40.177 What does the second laboratory do with the split specimen when it is tested to reconfirm the presence of a drug or drug metabolite?
  • § 40.179 What does the second laboratory do with the split specimen when it is tested to reconfirm an adulterated test result?
  • § 40.181 What does the second laboratory do with the split specimen when it is tested to reconfirm a substituted test result?
  • § 40.183 What information do laboratories report to MROs regarding split specimen results?
  • § 40.185 Through what methods and to whom must a laboratory report split specimen results?
  • § 40.187 What does the MRO do with split specimen laboratory results?
  • Section 40.187 Questions and Answers

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