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                Drug Testing Laboratories
    

    
    
          Drug testing laboratories must be certified by the Department of Health and Human Services. These laboratories receive, analyze and report laboratory confirmed results only to MROs. Regulations concerning drug testing laboratories are found in 49 CFR Part 40 Subpart F, Subpart Q and Subpart R and Appendices A, B and C.

Find more specific information for drug testing laboratories >>
              
      
    
          Last updated: Thursday, May 13, 2021 U.S. DEPARTMENT OF TRANSPORTATION

**Federal Motor Carrier Safety Administration**

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