Our Services

Mobile. Certified. Built for Houston Businesses.

We offer a full range of DOT and non-DOT drug and alcohol testing services — all performed on-site at your location by certified collectors and processed through certified laboratories.

Pre-Employment Drug Testing

Before you hire, know who you’re bringing on. Our pre-employment testing screens candidates quickly so you can make confident hiring decisions without delays.

• Available for DOT and non-DOT positions

• Results processed through certified labs

• We come to your facility or can coordinate at a convenient location

Random Drug & Alcohol Testing

Stay compliant year-round with a managed random testing program. We handle the selection process, scheduling, and collection — so you stay protected without the administrative headache.

• DOT-compliant random pool management

• Consortium enrollment available for owner-operators and small fleets

• Unannounced selections to meet federal requirements

Post-Accident Testing

When an incident happens, time matters. We respond quickly to conduct post-accident drug and alcohol testing that protects your company and meets DOT reporting requirements.

• Rapid response for workplace incidents

• Proper chain of custody maintained

• Documentation you can defend

Reasonable Suspicion Testing

When a supervisor has cause for concern, we’re ready. Our collectors conduct reasonable suspicion tests with professionalism and discretion — protecting both the employee and your business.

• Supervisor-initiated testing support

• DOT reasonable suspicion standards followed

• Confidential and legally defensible process

Alcohol Testing

We conduct breath alcohol testing using DOT-approved devices and certified technicians. Fast results. Accurate readings. Proper documentation.

• DOT and non-DOT breath alcohol testing

• EBT (Evidential Breath Testing) available

• On-site at your location

Return-to-Duty & Follow-Up Testing

Employees returning to safety-sensitive positions after a violation must complete a strict testing protocol. We manage the process from start to finish.

• Coordinated with your SAP (Substance Abuse Professional)

• Follow-up testing schedules managed for you

• Full documentation provided

Already have a TPA/MRO?

That’s ok! We can provide your collection services using your TPA/MRO. No need to send anyone to a lab, loosing a days work! Let us handle everything!

Not Sure What You Need?

We’ll help you figure it out. Tell us about your industry, workforce size, and compliance requirements — and we’ll recommend the right testing program for your operation.

A certified collector conducting an on-site drug test at a busy construction site.
A certified collector conducting an on-site drug test at a busy construction site.
Mobile testing van parked outside an oil and gas facility in Houston.
Mobile testing van parked outside an oil and gas facility in Houston.
Drug Testing

DOT and non-DOT drug screening performed quickly and accurately on-site.

Alcohol Testing

Reliable breathalyzer and alcohol screening services wherever you need them.

Trusted Testing, Proven Results

At Precision Lab Express, we bring fast, on-site drug and alcohol testing tailored for Houston’s toughest industries.

A professional technician conducting a mobile drug test at a busy construction site in Houston.
A professional technician conducting a mobile drug test at a busy construction site in Houston.
Reliable service that never misses deadlines.

J. Smith

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Consortium & TPA/MRO Services Available!

Flexible testing options tailored for your business