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Mandatory use of Clearinghouse was January 6, 2020. Registration is open. Register here.

Drug & Alcohol Clearing House (General information)

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  • Home
  • About CSS
    • CSS Blog
  • Why CSS?
  • Services
    • CSS Consortium Services
    • Drug testing during Covid-19
    • FMCSA Clearinghouse
  • Statistics
  • Resources
    • Cocaine
    • Heroin
    • Methamphetamine
    • Club Drugs
    • Marijuana
  • FAQ
  • Drugs of Abuse
  • Contact Us