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Home › Services › Hazmat & TWIC Endorsement Testing
Modern diagnostic laboratory serving Fresno and the Central Valley
DOT · Drivers adding endorsements

Hazmat & TWIC endorsement support — clear the extra hurdles to haul.

Adding a Hazmat endorsement or getting a TWIC card for port and secure-facility access means extra screening on top of your standard CDL requirements. We handle the DOT testing and physical side so you can clear the hurdles and keep hauling.

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What these credentials require

A Hazmat endorsement lets you haul placarded hazardous materials and requires a TSA security threat assessment plus your standard DOT medical and testing compliance. A TWIC (Transportation Worker Identification Credential) is needed for unescorted access to secure port and maritime facilities. Both sit on top of the DOT drug testing, physical, and consortium requirements you already have to meet as a CDL driver.

What we handle

  • DOT drug & alcohol testing tied to your driving qualification (see DOT testing)
  • DOT physicals to keep your medical card current (see DOT physicals)
  • Consortium enrollment for owner-operators adding endorsements (see consortium)
  • Guidance on the testing and medical documentation these endorsements expect
Note: the TSA background/threat assessment and the credential application itself are handled through TSA, not a testing provider. We handle the DOT medical and drug-testing pieces and point you to the right application resources. Call (559) 272-7953 with questions.

One stop for driver compliance

Rather than bouncing between clinics, run your physical, drug testing, and consortium through one local provider that understands what carriers and endorsements require — and get back on the road faster.

Answers

Frequently asked — Hazmat & TWIC Endorsement Testing

Do you issue the Hazmat endorsement or TWIC card?

No — those credentials are issued through TSA/state processes. We provide the DOT drug testing and physicals that support your CDL qualification, and point you to the right application steps.

What testing do I need for a Hazmat endorsement?

You must keep your standard DOT medical card and drug/alcohol testing compliance current. We handle those, same-day where possible.

Can owner-operators adding endorsements enroll in a consortium here?

Yes. We enroll owner-operators in a compliant random pool and keep your records audit-ready.

How much does this cost?

It depends on which tests and physicals you need. Call and we'll lay out exactly what's required and the price.

Can I do my physical and drug test in one visit?

Yes — we bundle DOT physicals and drug testing so you clear your driver requirements in a single stop.

Fresno · Clovis · Madera · The Central Valley

Need a test today? Talk to a real person.

Walk-ins welcome and same-day appointments across the Central Valley. Call or text now and we'll get you scheduled fast — court-ordered, DOT, employer, or individual. Results handled with full chain-of-custody.

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Tell us what you need and we'll text or call you right back with the fastest available appointment and an exact price. Prefer to talk now? Call or text (559) 272-7953.