Certified DOT Testing Center in Port Huron, Michigan

Blue Water DRP LLC is a fully certified provider of DOT drug and alcohol testing in Michigan, serving commercial drivers, employers, and government agencies across the state. As a family-owned and operated facility with over a decade of experience, we offer professional, federally compliant testing you can count on.



Whether you’re a CDL holder, transportation company, or part of a safety-sensitive workforce, our DOT-compliant testing services ensure you meet all U.S. Department of Transportation requirements.

DOT Testing Hours & Availability

DOT testing is offered on a specific schedule to meet compliance needs:

Testing Hours:

  • Monday through Friday: 6:00 AM to 3:00 PM
  • Closed on holidays for DOT testing
  • No appointment necessary – walk-ins welcome during DOT hours

What Is DOT Drug and Alcohol Testing?

DOT drug and alcohol testing is required for individuals in safety-sensitive transportation roles regulated by the federal government. This includes commercial drivers, pipeline workers, railroad operators, and others governed by:

  • FMCSA (Federal Motor Carrier Safety Administration)
  • FAA (Federal Aviation Administration)
  • PHMSA (Pipeline and Hazardous Materials Safety Administration)
  • FRA (Federal Railroad Administration)

At Blue Water DRP LLC, we conduct all DOT tests in accordance with 49 CFR Part 40 regulations.

A syringe and pills are on top of a drug test result
A bottle of pills is sitting on top of a drug test form.

Our DOT Testing Services Include:

  • Pre-Employment Testing - Ensure your hires meet safety standards before getting behind the wheel.
  • Random Drug Testing Programs - Help maintain a drug-free workplace with scheduled and random testing.
  • Post-Accident Testing - Quick response and collection for incidents involving property damage or injuries.
  • Return-to-Duty Testing - Support drivers returning to work after a policy violation with proper follow-up testing.
  • Reasonable Suspicion Testing - Protect your company and drivers by responding promptly to observed behaviors.

Why Employers and Drivers Trust Blue Water DRP LLC

  • Certified DOT collection site
  • Licensed and insured
  • Fast turnaround on results
  • Confidential handling of sensitive data
  • QUEST Preferred testing partner for consistent lab results
  • Walk-in friendly and locally operated in Port Huron

Real Customer Experiences

Verified Google Review

“The staff is friendly, efficient, and made the whole process stress-free. Highly recommend Blue Water DRP!”

A row of black stars on a white background.
A row of black stars on a white background.

“They explained everything clearly and had my results faster than expected. I’ll definitely return here if I need testing again.”

Verified Google Review

Frequently Asked Questions About DOT Testing

  • Who is required to take DOT drug tests?

    Anyone working in a safety-sensitive position under a DOT-regulated agency, such as CDL drivers, pilots, and pipeline operators.


  • What substances are tested for in a DOT drug test?

    DOT urine drug tests screen for marijuana, cocaine, opioids, amphetamines, and PCP.


  • Can I walk in for a DOT test?

    Yes. Walk-ins are welcome during our DOT testing hours: Monday through Friday, 6:00 AM to 3:00 PM.


  • Is your staff certified for DOT collections?

    Yes. All collectors are trained and certified under DOT guidelines and 49 CFR Part 40.

  • How quickly can I get results?

    Negative results are often available within 24 to 48 hours. Positive or inconclusive results may take longer due to confirmation testing.

Visit Us for DOT Testing in Michigan

We help drivers and companies stay compliant and on the road. Whether it’s for a new job or a random test, we’ll make sure your DOT testing experience is smooth, respectful, and fully compliant.