U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 49Chapter IPart 199Subpart B - Subpart B—Drug Testing
§ 199.100 - Purpose.
§ 199.101 - Anti-drug plan.
§ 199.103 - Use of persons who fail or refuse a drug test.
§ 199.105 - Drug tests required.
§ 199.107 - Drug testing laboratory.
§ 199.109 - Review of drug testing results.
§ 199.111 - [Reserved]
§ 199.113 - Employee assistance program.
§ 199.115 - Contractor employees.
§ 199.117 - Recordkeeping.
§ 199.119 - Reporting of anti-drug testing results.
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