24/7 mobile drug testing with certified collection and clear reporting, so you can stay productive while staying compliant.
The U.S. Department of Transportation requires certain commercial motor vehicle operators to undergo alcohol and drug testing. Whether you're implementing a new program or need a testing facility, we meet all DOT compliance requirements.
The following drug and alcohol tests apply to all persons required to have a Commercial Driver's License.
Required before a driver performs any safety-sensitive function. Negative results must be received prior to starting. Controlled substances test required; alcohol testing permitted.
Required when a trained supervisor has reasonable suspicion to believe that a driver has used alcohol and/or controlled substances based on specific observations.
DOT random testing support, including consortium enrollment (C/TPA) for owner-operators and small fleets. Unannounced testing based on scientifically valid random selection. Selection remains confidential until notification.
Required for CDL drivers involved in fatal crashes or cited for moving violations with vehicle towing or off-scene medical attention. Alcohol test within 8 hours; controlled substances within 32 hours.
Request service, we handle the logistics, and you receive secure, clear results and documentation.
Tell us what you need and where. We’ll confirm the details and coordinate the right test or screening.
Mobile collection is completed at your job site, office, or convenient location by trained professionals.
Receive results securely with clear reporting and the documentation you need to stay organized and confident.
Cocaine, methamphetamine, opiates, and PCP are quickly excreted from the body and usually undetectable in urine within 72 hours. Hair follicle testing provides an in-depth assessment of up to 90 days in the past.
Far exceeding the 72-hour detection window of urine testing
Compared to urine specimen testing with longer detection windows
There are currently no known adulterants for hair tests. Results cannot be altered with special shampoos, dyes, bleaches, or other external chemicals.
Because hair tests analyze drugs inside the hair shaft, external contaminants have no effect. The non-intrusive, directly observable collection procedure eliminates the ability to avoid or delay testing.
Mandated for testing by the Federal Government:
If you employ anyone in a safety-sensitive position regulated by a Department of Transportation agency, you're subject to the testing rules in 49 CFR Part 40 — regardless of how small your operation is. Even a single driver triggers the requirement.
The agency that governs you depends on your industry: FMCSA covers trucking and commercial motor carriers, FAA covers aviation, FRA covers rail, FTA covers transit, PHMSA covers pipelines, and the Coast Guard covers maritime.
For trucking specifically, you're generally covered if a CDL is required — meaning the vehicle has a gross vehicle weight rating of 26,001 pounds or more, is designed to carry 16 or more passengers including the driver, or transports hazardous materials in placardable quantities. Owner-operators aren't exempt; because you can't randomly select from a pool of one, you're required to join a consortium.
Not sure where you fall? Call us and we'll walk through it with you. Getting this wrong is expensive — FMCSA fines for testing violations run into the thousands per occurrence.
Nothing is reported to you until a Medical Review Officer has reviewed it. The MRO contacts the employee privately to determine whether a valid prescription explains the result. If it does, the test is reported as negative. If not, it becomes a verified positive and we notify your designated employer representative.
From there, for DOT-regulated employees:
1. The employee must be immediately removed from all safety-sensitive duties. This isn't optional, and it applies the moment you're notified.
2. For FMCSA-covered drivers, the violation is reported to the FMCSA Drug and Alcohol Clearinghouse.
3. You must provide the employee with a list of qualified Substance Abuse Professionals. The SAP evaluates them and prescribes education, treatment, or both.
4. After the SAP confirms compliance, the employee may take a return-to-duty test — always directly observed.
5. They then enter follow-up testing: a minimum of six unannounced tests in the first 12 months, and the SAP can extend the program up to five years.
Worth knowing: DOT rules don't require you to terminate the employee. They require removal from safety-sensitive functions. Whether you keep them in another role or end employment is your company policy — and that policy should be in writing before you need it.
Rapid screens give you preliminary results on site in minutes. Anything non-negative is sent to the lab for confirmation, because a rapid screen alone is never grounds for an employment decision.
For lab-based testing, negatives are typically back within 24–48 hours. Non-negatives take longer — usually 2–4 additional business days — because they go through confirmation testing and MRO review. That extra time is what protects you: it's the difference between a defensible result and one that falls apart when challenged.
We report results to your designated contact by secure online portal / email, and you'll get a status update if anything is running long.
For scheduled testing, we work around your calendar — mornings, evenings, weekends. For post-accident and reasonable suspicion calls, we typically arrive within 1 hour, 24/7.
Speed matters most for post-accident testing, where the clock is a compliance issue. DOT rules require alcohol testing be attempted within 8 hours and drug testing within 32 hours of the accident — and if you miss those windows, you have to document why.
That's the situation CMDT is built for.
Our certified professsionals are available 24/7 with mobile service to your location. Fast, accurate, and fully compliant

