About ValTox

At ValTox, we’re more than just a mobile drug testing service — we’re a partner you can count on.

Founded by Adolph Valdez, a seasoned occupational health professional with over a decade of experience, ValTox was built to bring speed, reliability, and convenience to workplace drug and alcohol testing. After years of managing clinics, DOT programs, and testing operations across multiple states, Adolph saw the need for a more flexible, business-friendly approach. That’s where ValTox comes in.

We work with businesses of all sizes — from trucking fleets to manufacturing plants — to provide on-site testing that minimizes downtime and keeps you in compliance. But what truly sets us apart is our commitment to building lasting partnerships. We take the time to understand your needs, tailor services to your operations, and deliver with consistency and care.

Serving San Antonio, Austin, and the surrounding areas, ValTox is proud to be a local, bilingual provider focused on helping our community thrive.

Services we offer:

✔️ On-site drug and alcohol testing — right where and when you need it
✔️ DOT and non-DOT testing services
✔️ 24/7 post-accident and reasonable suspicion testing
✔️ Rapid and lab-based testing options
✔️ Breath alcohol testing
✔️ Oral fluid and urine collections
✔️ Pre-employment, random, return-to-duty, and follow-up testing
✔️ DOT-compliant programs and support
✔️ Reliable turnaround times and detailed reporting
✔️ Background checks (pre-employment, criminal, and more)
✔️ DOT Collector Training & Certification
✔️ DER (Designated Employer Representative) Training
✔️ Bilingual services available (English & Spanish)

Let’s build something stronger — together.

Adolph Valdez
Founder, ValTox