U.S. Code of Federal Regulations

Regulations most recently checked for updates: Dec 07, 2024

All TitlesTitle 49Chapter APart 40Subpart F - Subpart F—Drug Testing Laboratories
§ 40.81 - What laboratories may be used for DOT drug testing?
§ 40.82 - What drugs do laboratories test for?
§ 40.83 - How do laboratories process incoming specimens?
§ 40.84 - How long does the laboratory retain specimens after testing?
§ 40.85 - What are the cutoff concentrations for urine drug tests?
§ 40.86 - What is urine validity testing, and are laboratories required to conduct it?
§ 40.87 - What validity tests must laboratories conduct on primary urine specimens?
§ 40.88 - What criteria do laboratories use to establish that a urine specimen is dilute or substituted?
§ 40.89 - What are the adulterant cutoff concentrations for initial and confirmation urine tests?
§ 40.90 - What criteria do laboratories use to establish that a urine specimen is invalid?
§ 40.91 - What are the cutoff concentrations for oral fluid drug tests?
§ 40.92 - What is oral fluid validity testing, and are laboratories required to conduct it?
§ 40.93 - What validity tests must laboratories conduct on primary oral fluid specimens?
§ 40.97 - What do laboratories report and how do they report it?
§ 40.101 - What relationship may a laboratory have with an MRO?
§ 40.107 - Who may inspect laboratories?
§ 40.109 - What documentation must the laboratory keep, and for how long?
§ 40.111 - When and how must a laboratory disclose statistical summaries and other information it maintains?
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