Analytical Tox Lab Corp
Drug and Alcohol Testing Services


Our highly skilled Lab Technicians treat each person being drug tested with empathy and dignity. Analytical Tox Lab Corp is committed to protecting your privacy and to listen to your concerns and willing to meet and surpass your expectations.

Do you need to have your drug testing lab results today?
No problem! There is no need for appointments, you will be processed within minutes. Simply show up at our lab with a valid photo ID by 12 noon and your lab results will be ready within 2 hours. If you arrive after 12 noon, your lab results will be provided within ONE working day. 

Except for DOTs and DNA Paternity Testing, 
We are the only lab in the region to provide same day drug test lab results on all drug tests, including Hair tests.  You will receive your lab results within 2 hours if you show up by noon. 

Our Services Include:

  • Pre-employment Drug Testing
  • Random Drug Testing
  • Court Ordered Drug Testing
  • Urine Drug Tests
  • Hair Drug Test for the chronic user; will trace back as far as 3 months of drug use
  • DOT Drug Test (Department Of Transportation Test)
  • GC/MS Confirmation
  • MRO Testing (Third Party Medical Review Officer)
  • Alcohol Testing
  • ETG Alcohol Testing
  • Synthetic Drug Testing, also known as K2, Bath Salts, Spice, Synthetic Marijuana, manmade chemicals related to amphetamines
  • Private Individual Drug Testing
  • School Drug Testing
  • DNA Paternity Testing


Urine 5 Panel Test                                       

  • Amphetamines
  • Opiates
  • Cocaine
  • Marijuana THC
  • Phencyclidine

Urine 7 Panel Test

  • Amphetamines
  • Opiates
  • Cocaine
  • Marijuana THC
  • Phencyclidine
  • Barbiturates
  • Benzodiazepine


  • Urine 10 Panel Test
  • Amphetamines
  • Opiates
  • Cocaine
  • Marijuana THC
  • Phencyclidine
  • Barbiturates
  • Benzodiazepine
  • Methadone
  • Ecstasy
  • Propoxyphene


  • Alcohol Test: may be added to all panel tests.
  •  ETG Alcohol Test (More intensive or sensitive form of alcohol test) is available for individuals that must abstain from any alcohol drinking.
  • DOT Drug Testing (Department Of Transportation)
  • Custom Panels Available upon volume
  • DNA Testing (Paternity Testing)

Analytical Tox Lab Corp, automatically tests for "adulteration" at NO additional charge to you.

Better Technology
In business since 1996, unlike most Drug Testing Facilities in this area, Analytical Tox Lab Corp is an actual Laboratory and runs ALL drug tests on an Analyzer. Locally owned and operated (NOT a Franchise) and with the only GC/MS analyzer in South Texas. A GC/MS Analyzer is a Gas Chromatography/Mass Spectrometry Analyzer, which is the ONLY way to rule out FALSE POSITIVES. It breaks down drug profiles, separating cough or Allergy Medicines.
Unfortunately most local competitors utilize the "Self-Test" type of testing  (Rapid Test-Card Testing) leaving you at risk of getting a "FALSE" positive.  
"Rapid Testing" (Card Testing) is the  type of test you can do yourself at home because it doesn't require any type of professional skills or experience. However, it tends to render FALSE positives. To avoid FALSE positives, you must make sure you are being tested by a PROFESSIONAL Drug Testing Lab that runs ALL drug tests on an "Analyzer" and will confirm all positive results with a GC/MS. You can trust Analytical Tox Lab Corp is the right choice for all your drug testing needs.

Qualified Technicians
Our Technicians ensure consistent quality control and competency. All of our equipment is calibrated daily and treated in accordance with defined "best industry practices" Our Technicians are highly trained, following protocol that guards the integrity of the testing process from sample collection to lab results.
Their experience also ensures that lab results are interpreted correctly and that confirmation analysis are processed to screen out false positives and mitigate legal exposure.

Reduced Legal Exposure
Avoid the lawsuits that "Self-Tests" open your business to. If your Company conducts "Self-Tests", you remain open to lawsuits that many businesses are now facing. At issue is the expertise of those interpreting results and the process for validating Lab Results. Many "do-it yourself" employers risk being cited for IMPROPER "Hazardous Material Disposal" and even more seriously, for breaking privacy laws with regard to confidentiality information disposed in trash bins or otherwise made accessible to others. Our procedures at Analytical Tox Lab Corp ensure that you are protected from this liability. All this peace of mind at the MOST affordable fees.

Drug Testing has never been faster and easier. Need Lab Results Today? No problem, within minutes of Signing in at our reception area,  the person being drug tested will be  processed and therefore able to promptly return to work, school or normal activities. The Lab Results are ready the same day (within 2 hours in most cases) and at NO ADDITIONAL COST to you. NO APPOINTMENTS NECESSARY. Walk-ins always welcome

We are the actual Laboratory, this means there are NO "middlemen" marking up your fees. Most drug test laboratories ship out their collected samples to other Laboratories and have to mark up their costs to make a profit.
At  Analytical Tox Lab Corp we do all lab work "in-house" and therefore provide FASTER Lab Results at much lower fees than our competitors.

You are an employer and want to know more about our services

If you need to test your employees on a regular basis; setting up an account is quick and easy. All you need to do is:

  1.  Complete and sign a very brief ONE PAGE "Client Information Form" and fax it or email it back to us.
  2.  Once we receive your completed and signed Client Information Form,
    your account is SET and ready to go the same day we receive it. This means you can begin ordering tests the very same day you submit your information. Quick and easy-


 You'll be pleased to know we  bill-itemized invoices- ONLY once a month, at the end of the month and ONLY for services rendered. This is a plus for your books, as you will be able to clearly see how many tests you have ordered in any given month. (NO HIDDEN COSTS)

Or you might just need to test ONE or TWO employees every now and then and may decide (you do not need to set up an account) to "pay as you go" without having to wait for any invoices.  The choice is entirely yours and the process entirely quick and simple.

If you wish to be contacted by us to set up an account, please complete the form in the "Contact Me" segment of this page.

For a more immediate response about our services, please call  210-692-4166 or click on following link:      

(we'll be delighted to answer your questions 9:00 am to 5:00 pm Monday-Friday)

Lab Office Hours
Our Lab office hours are Monday through Friday 9:00 am to 5:00 PM. No Appointments necessary. Walk-ins are always welcome.

Now Offering Synthetic Drug Testing. Easy, quick and painless-try us today

                                                Analytical Tox Lab Corp
                                               4115 Medical Drive, Suite 500
                                                 San Antonio, TX 78229
                                       Laboratory Telephone: 210-696-7258
                                   To set up an account call: 210-692-4166

                                                    Proud Veteran Owned Business Member!