The Drug Testing Laboratory
General Information
Drug testing laboratories certified by the Department of Health and Human Services receive urine specimens and test them to determine the presence of drugs. They also conduct validity testing to determine if the specimen has been adulterated or substituted.
A laboratory located in the U.S. is only permitted to participate in DOT drug testing only if it is certified by HHS under the National Laboratory Certification Program (NLCP) or in the case of a foreign laboratory, if it is approved for participation by the DOT with respect to Part 40.
A laboratory participating in DOT drug testing must comply with the requirements in 49 CFR Part 40, as well as, all applicable HHS requirements. While it is important for the laboratory to be familiar with all aspects of 49 CFR Part 40, the laboratory should pay particular attention to the following:
- Subpart F - Drug Testing Laboratory
- Subpart Q - Roles and Responsibilities of Service Agents
- Subpart R - Public Interest Exclusions
- Appendix A - DOT Standards for Urine Collection Kits
- Appendix B - DOT Drug Testing Semi-Annual Laboratory Report
- Appendix C to Part 40 DOT Drug Testing Semi-Annual Laboratory Report to DOT
Documents/Publications
- HHS Mandatory Guidelines - Effective May 1, 2010 PDF
- HHS Mandatory Guidelines - Correction of Effective Date PDF
- DOT’s 10 Steps to Collection Site Security and Integrity Video
- Current list of certified labs
- Federal Drug Testing Custody and Control Form (CCF)
- Part 40 Q&As
Association/Industry Links:
Last updated on: 06/14/2012
Contact Us
- Office of Drug & Alcohol
Policy & Compliance - Email:
W62-300
1200 New Jersey Ave, S.E.
Washington, D.C. 20590
Tel: 202-366-3784
800-225-3784
Fax: 202-366-3897
Important Links
- Documents & Forms
- 2011 Random DOT Testing Rates
- Certified Laboratory List
- Approved Alcohol Screening Devices
- Approved Evidential Breath Testing Devices
- MIS Data Form & Instructions
- FAQs
- Ask Us A Question
- Office of National Drug Control Policy
- SAMHSA/Division of Workplace Programs
- Department of Education Safe and Drug Free Schools