This resource center brings together comparison tables, reference ranges, document checklists, and primary-source directories. The tools are designed to improve questions and recordkeeping, not to predict a guaranteed result or replace professional advice.
Reference tools
- Drug-Test Method Comparison — compare urine, oral fluid, blood, hair, and home screening.
- Detection Window Reference — understand ranges, assumptions, and why exact countdowns fail.
- Drug-Test Records Checklist — preserve the documents needed for medical, workplace, legal, and sports review.
- Authoritative Sources Directory — find official U.S. and anti-doping resources.
How to use a reference responsibly
Match the table or checklist to the actual specimen, cutoff, panel, jurisdiction, and program. A general range cannot override a laboratory report or regulation. Verify the date because prohibited lists, state laws, device authorizations, and program manuals change.
What a tool cannot determine
- The exact day an individual will test negative.
- Whether a particular person was impaired at a past time.
- Whether a test was lawful in every jurisdiction.
- Whether a prescription or TUE will be accepted without official review.
- Whether an adverse decision should be appealed.
Decision support
For a step-by-step workflow, use the Drug Testing Decision Guides. They cover choosing a test, preparing for collection, interpreting a report, and reviewing a disputed result.
Quick education
Use the Drug Testing Glossary for terminology and the Drug Testing FAQ for common questions.
Safety statement
These resources do not provide methods for adulteration, substitution, evasion, or manipulating a test. “Detox” and masking products are not a reliable solution and can create health and legal risks.
Core official sources
- SAMHSA: Workplace Drug Testing Resources
- U.S. DOT: 49 CFR Part 40
- FDA: Drugs of Abuse Tests
- MedlinePlus: Drug Testing
- WADA: Prohibited List
Resource review: October 29, 2026.