Nationwide Testing Systems formerly American Drug Screening Service has been providing drug
screening in Houston, Texas and around the world for 19 years. We now offer DNA Paternity
testing at a location near you.
We specialize in companies with multiple locations across the nation.
Drug test performed in SAMSHA/DHHS Certified Laboratories
Provide same day negative drug screen reports
Provides longer detection times for drugs of abuse
Urine, Saliva and EBT available in most locations
Legal testing performed in AABB Certified Laboratory
Test in the privacy of your own home (for personal knowledge only)
Computer generated random selection services for employee drug test programs
Random selection pool in compliance with Department of Transportation (DOT)
and Texas Department of Licensing and Registration (TDLR)
|All rights reserved.
|Nationwide Testing Systems
|What We Do
|Just tell us your ZIP CODE
We have a location to serve you.
Toll Free (866) 859-8378