Nationwide Testing Systems
Nationwide Testing Systems, formerly American Drug Screening Service, has provided comprehensive drug and alcohol testing in Houston, Texas, and aroun…
4141 Directors Row, Suite A, Houston, TX 77092
Employer platform for Nationwide Testing Systems
Plan Your Visit
Accepting new patients — open to first-time and one-time visitsSaturday hours — open 9:00 AM to 12:30 PMWeekly Hours
- Mon – Tue
- 8:15 AM – 4:30 PM
- Wed
- 9 AM – 4:30 PM
- Thu – Fri
- 8:15 AM – 4:30 PM
- Sat
- 9 AM – 12:30 PM
- Sun
- Closed
Before You Arrive
Hair Follicle Drug Screen
10–20 minutesDon't shave your head before the test. Hair treatments and dye are fine.
Full prep guideRegulated DOT Drug Screen
15–30 minutesStay hydrated but don't overhydrate. Bring prescription list for MRO review. CBD products may cause a positive.
Full prep guideDOT Physical
30–60 minutesFast for 8–12 hours if blood work is included. Bring CDL, glasses/contacts, and CPAP data if applicable.
Full prep guideSputum Drug Screen
10–20 minutesNo eating, drinking, smoking, or gum for 10 minutes before.
Full prep guideTexas Compliance Notice
DOT published final rule allowing hair testing as an alternative to urine testing for pre-employment drug screening of CDL holders. Employers may opt in to hair testing programs with proper MRO review procedures.
Community Expert
Services
5 servicesServices available at Nationwide Testing Systems. Schedule through BlueHive for guaranteed network pricing.
Drug Testing
(4)Hair Follicle Drug Screen
Est. $100-$300 avg in Texas
Regulated DOT Drug Screen
Sputum Drug Screen
Est. $15-$53 avg in Texas
Urine Drug Screen
Est. $20-$60 avg in Texas
Medical Exams
(1)Book Through BlueHive
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Managing Employee Health for a Team?
BlueHive lets employers schedule, track, and manage occupational health services from one dashboard — across 20,000+ providers nationwide.
- Single dashboard for all locations and employees
- Real-time results and compliance tracking
- Guaranteed in-network pricing — no surprise bills
- No setup fees or long-term contracts
Learn More About Our Services
Explore detailed guides for the occupational health services available at Nationwide Testing Systems.
Industries Served by Nationwide Testing Systems
Learn how employers in these industries use providers like Nationwide Testing Systems for compliance and workforce health.
Frequently Asked Questions About Nationwide Testing Systems
Common questions about services, hours, and scheduling at Nationwide Testing Systems in Houston, TX.
Nearby Providers
Other in-network occupational health providers near Houston, TX.
Concentra Urgent Care - Hempstead
LabCorp - Houston (N. Loop)
Memorial Hermann Medical Group Greater Heights
Doctors Clinic Houston - Northwest Freeway
Next Level Urgent Care - Garden Oaks
Wellness Heights Chiropractic
Ready to Schedule?
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