- Drug Free Workplace Act of 1988
- FirstLab
- ChoicePoint
- Drug & Alcohol Information (DHHS)
- USDOT Office of Drug & Alcohol Policy & Compliance
- List of Substance Abuse Professionals (Arkansas)
- Drug and Alcohol Testing Industry Association
- Substance Abuse Program Administrators Association
- FTA D&A Program
- FMCSA D&A Program Overview