Home   About   News   Contact

Fastest Labs Drug, Alcohol DOT & DNA Testing

Fastest Labs is your premier drug testing, alcohol testing, DOT and DNA testing lab in San Antonio. Our lab provides certified drug, alcohol, and DNA testing for both private and legal purposes. Our lab tests are always affordable for businesses, individuals, students, teens, and corporations. In addition, we have additional labs located across the country and can arrange for testing to be performed in nearly any city in the US. 

Additional testing services our San Antonio lab offers include steroid testing, background screening, employee testing, DOT drug and alcohol testing and so much more! For a list of all tests and screens which our lab offers click here

 Get Fast Results Today!

San Antonio fast drug test

Current Promotions

$10 Off Legal DNA Paternity
Get $10 off our legal DNA paternity test!
$3 Off 10 Panel Urine Test
Get $3 Off a 10 Panel Urinalysis

Why Choose Fastest Labs in San Antonio?

  • Certified Technicians

    Our San Antonio drug testing lab techs are certified professional collection agents and certified professional breath and DOT alcohol screening technicians.

  • Clean Facilities

    Our San Antonio lab is the cleanest and most comfortable drug testing lab.

  • Fast Service & Rapid Results in San Antonio

    You will be served within 5 minutes of your arrival. On most tests you will receive immediate results. On lab tests, your results will be ready in less than 24 hours. 

  • Customer Service

    Our friendly lab techs are top notch have the highest customer service ratings in the industry.

  • Affordable Pricing in San Antonio

    We have competitive pricing!

Contact our San Antonio lab Today!

Employer Solutions

San Antonio drug test

Need to implement your San Antonio business's drug testing and alcohol testing policy for your employees? Fastest Labs offers the most comprehensive coverage for drug and alcohol testing and programs that can be customized, designed and implementation for your company and employees. Call our lab today to find out how you can have a drug-free workplace by using Fastest Labs in San Antonio!


Approved Collection Sites For:

Please check with the lab nearest you as our San Antonio locations each have their own set of affiliations

eScreen Collection Site San AntonioDISA Collection Site San AntonioQuest Collection Site San AntonioLabcorp Collection Site San AntonioExpertox Collection Site San AntonioClinical Reference Laboratory San AntonioOmega Collection Lab San AntonioAlere Collection Lab San AntonioMedtox Collection Lab San AntonioDISA Collection SIte San AntonioPsychemedics Corporation San Antonio