Open Accessibility Menu
The Reliable Results You Need, When You Need Them Drug, Alcohol,
and DNA Testing
Fastest Labs SE San Antonio
Today's Hours: 8:00 AM - 5:00 PM See More Hours
6021 Rittiman Plaza
San Antonio, TX 78218
(210) 981-3898
Walk-ins Welcome! After hours and post-accident 24/7 service available.

Drug & DNA Testing in San Antonio, TX

Clean, Fast Testing & Reliable Results

Looking for a testing lab in SE San Antonio? At FastestLabs®, we proudly offer a complete range of drug, alcohol, and DNA testing for individuals, businesses, government agencies, and other organizations. Whether you are interested in learning more about your personal ancestry, would like to establish an ongoing random drug testing program for your employees, or even need court-admissible testing for a legal proceeding, Fastest Labs SE San Antonio is here to help. We are committed to providing fast, accurate test results in our clean, state-of-the-art lab facilities. Our friendly and professional staff can assist you throughout the entire process, answering your questions and finding the testing solution that suits your specific goals.

When you trust your drug, alcohol, or DNA testing services to us, you can count on:

  • Clean labs and mobile, on-site testing facilities
  • Friendly and professional staff members
  • Fast, non-invasive testing methods
  • Certified, accurate test results
  • Complete confidentiality and discreet testing
  • Affordable rates, including online offers

In most cases, the results of your test will be available almost immediately. While we do recommend additionally testing for any positive alcohol or drug test results, which can take up to a few days, we work to provide the results of any test within 24 hours.

Visit our video center to see our technology and tour our labs

Sign in with iPad
  • Fastest Labs building
    Find Your
  • Fastest Labs online appointment
    Request Your
  • Fastest Lab rep assisting you
    Visit Your Nearest
    Fastest Labs
  • Handing a patient the results
    Quickly Receive
    Your Test Results

Drug & DNA Testing Lab Near You

Reliable, Easy San Antonio Lab Testing Services

When it comes to a random drug test, post-accident alcohol test, paternity testing, immigration DNA test, or any other personal testing service, you want to be completely sure that the results are accurate, as the outcome of your test can have lasting implications. At Fastest Labs SE San Antonio, we are committed to providing you with the fastest, most accurate testing services possible. We make it our mission to go above and beyond for our clients in order to ensure that your experience with us is a pleasant one.

Our testing services include:

  • Drug testing
  • Alcohol testing
  • DNA testing
  • DOT Testing

About San Antonio, TX

Named after Saint Anthony of Padua, San Antonio was first established as a Spanish mission and outpost in 1718. After a highly contentious history that includes the 1836 Battle of the Alamo, San Antonio transitioned from Native American to Spanish to Mexican to American territory. Today, San Antonio is known as a modern city with deep Wild West roots. It is culturally diverse and full of opportunity. Some of San Antonio's main attractions include River Walk, Mission San Jose, and the San Antonio Zoo.

Give us a call at (210) 981-3898 to learn more about our DNA testing San Antonio, TX!

Fastest Labs rep cutting patient's nails

Our Partners

  • ExperTox
  • Lab Corp
  • Clinical Reference Laboratory
  • Alere
  • Quest Diagnostics
  • DISA
  • Omega Labs
  • Medtox Laboratories
  • Psychemedics

Request an Appointment

Walk-ins and same day appointments are welcome! Please call to inquire about weekend and after-hour appointments.
  • Please enter your first name.
  • Please enter your last name.
  • This isn't a valid phone number.
    Please enter your phone number.
  • This isn't a valid email address.
    Please enter your email address.
  • Please select a current date.
  • Please select a desired time.
*Indicates required field