DOT Testing Program Resources
DOT Drug and Alcohol Testing Procedures (Part 40) This is DOT rule 49 CFR Part 40, which sets forth required procedures for conducting drug and alcohol tests. View Part 40 Am I Covered? Determine [...]
Invalid Drug Test Results: Causes and Next Steps
Drug testing plays a critical role in workplace safety, compliance, and accountability. While most test results come back either negative (no drugs detected) or positive (drug or metabolite detected), there are cases where the laboratory [...]
What Is an Invalid Drug Test? Causes, Implications, and Employer Responsibilities
Drug testing plays a vital role in maintaining safety and compliance in the workplace—especially in regulated industries like transportation, healthcare, and manufacturing. But what happens when a test comes back as "Invalid"? While most [...]
Post-Accident Testing For Each DOT Agency
Understanding post-accident drug testing requirements ensures compliance with the regulations of different DOT agencies. Each agency outlines specific guidelines to determine when testing is necessary. FMCSA Post-accident drug testing becomes mandatory after any accident [...]
