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With 31 testing centers in the San Marcos area, we offer drug and alcohol testing for employment, probation and DOT requirements. Additional services include DOT consortium enrollment, DNA Testing and background checks. Order your tests and services online or call (800) 221-4291.
Our DOT Consortium Membership includes quarterly random selections, notifications by email & phone, testing site coordination, MIS reporting, and a Certificate of Compliance upon enrollment. Owner-operators DOT-regulated employers Certificate of Compliance.
Owner Operators- DOT requires all owner-operators to enroll in a consortium so they are included in a compliant random testing pool because they cannot randomly test themselves.
Small Employers-Some smaller companies may not have enough drivers or safety-sensitive employees to maintain their own statistically valid random pool. Therefore, by joining a consortium, they are combined with other companies to form a large pool that meets DOT testing requirements.
Large Employers-Larger fleets may manage their own random pool but often use a consortium/TPA to outsource the process, reduce administrative burden, and ensure strict compliance.
How Our DOT Consortium Works
Step 1: Enroll: Select a 1, 2, or 3 year membership and receive your Certificate of Compliance by email. Quarterly Selections: We process our consortiums using a scientifically valid, computer-generated random draws each quarter.Immediate Notifications: If selected, your DER receives email & phone notice with selection instructions.
Testing & Results: Visit the assigned testing center. ADT will manage CCFs, lab processing, and reporting.
MIS Reporting: Year-end and on-demand MIS reports included.
Included With Membership
Percentages are set by each DOT agency and may change.
FMCSA: Federal Motor Carrier Safety Administration
Employers governed by 49 CFR 382.305 must establish and maintain a compliant random program. Owner-operators are required to participate in a consortium consisting of two or more covered employees. This regulation is applicable in all states, including San Marcos, TX.
USCG: United States Coast Guard (operating under Homeland Security)
Marine employers, in accord with 46 CFR Part 16.230, are required to administer random drug testing for safety-sensitive personnel. This is also applicable to operations within San Marcos, TX.
FAA: Federal Aviation Administration
Under 14 CFR Part 120, employers are mandated to include all functions that are safety-sensitive. This is a nationwide requirement, also enforced throughout San Marcos, TX, ensuring a high safety standard in aviation.
Federal Railroad Administration (FRA)
Railroads operating in San Marcos, TX are mandated to follow and submit an FRA-approved random testing plan in compliance with 49 CFR 219.601-219.609. Ensuring adherence to these regulations is vital for maintaining the safety and integrity of railroad operations throughout the state.
| Employee Category | Drugs | Alcohol |
|---|---|---|
| Covered Service | 25% | 10% |
| Maintenance of Way / Roadway Workers | 25% | 10% |
| Mechanical | 50% | 25% |
Employers falling under 49 CFR Part 655 must utilize scientifically proven methods for random selection processes. In San Marcos, TX, this ensures public transit systems operate under the highest safety and reliability standards.
Pipeline and Hazardous Materials Safety Administration (PHMSA)
Operators regulated under Parts 192, 193, or 195 are compelled to test covered employees according to 49 CFR Part 199.
This mandate is in effect in San Marcos, TX, ensuring pipeline operations meet all federal safety obligations.
Joining our DOT consortium is the fastest way to achieve immediate compliance. We provide the Certificate of Compliance, random selections, MIS reports and testing coordination.
ENROLL TODAYNeed more tests? Additional DOT drug tests can be added at a discount.
Enroll Today! (800) 221-4291Immediate compliance for DOT random testing. Perfect for owner-operators and employers of any size.
Failing to comply with DOT drug and alcohol testing requirements can result in severe consequences for both employers and drivers, including:
What is a DOT Consortium (c/TPA) and who needs it?
A consortium c/TPA oversees aspects of an employer's drug and alcohol testing, involving random testing pools and ensuring adherence to 49 CFR part 40.
Are random testing percentages constant, or do they vary?
DOT random testing percentages can fluctuate annually based on positivity rates. Our consortium covers all DOT random testing fees regardless of the rate changes.
What happens when I am selected for a random test?
ADT will contact the DER or Owner Operator via email/phone with details about the nearest testing center and instructions. The chosen employee must proceed to the site promptly upon notification.
What drugs are tested on a DOT drug test?
A DOT drug test includes a DOT 5-panel urine screen and a DOT breath alcohol test. It's imperative that all tests use a Federal CCF and a Federal Alcohol Testing Form.
Can you assist during a DOT audit or inspection?
Yes, ADT can assist by organizing necessary documents such as pre-employment tests, proof of random pool enrollment, supervisor training certificates, policy development, and MIS reports.
How frequently can I update my employee pool?
Employee lists are verified quarterly. Employers can add or remove covered employees at any time before selection dates.
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It was fast and easy a pleasure to talk to the customer service people great service
Peter Villegas - 1/19/2025
A very nice company of expertise. The staff will go above to help you out of your situation in a timely matter 👏
Tam Jack - 2/19/2025
I've had to use this service twice for out of state physicians we've hired and both times it was super easy. Both customer service reps I spoke with were super helpful and courteous. I won't hesitate to use their service again if needed.
Alicia Rau - 6/19/2024
Super easy to schedule and get what you need, weather for a job, personal, or court ordered! I believe I spoke with Justine who was helpful in answering all my questions and stayed on the phone with me until she was sure I was all set and got the emails I needed.
Mandy Ryan - 12/14/2024
The visit here is always the best . The place is always really clean. The employees are super courteous, very polite, and professional. This is the only drug lab I like to go do my drug and alcohol test. I would like to tell them thank you so much for thier excellent performance and job
Eli Gonzalez - 1/4/2025
Reception is kind and helpful , everything quick and simple , best urgent care
Yusuf Narmuradov - 11/19/2024
Everything was great, the staff was very polite. Thank you.
Olga Petrova - 9/19/2024
It was easy to make the arrangements to get to someone in regards to renewing my DOT medical certificate. They took care of everything over the phone which made my experience hassle free. I will definitely be using them again and you should too.
Jim Raymond - 10/18/2024
I always have a good experience setting up company driver drug screens through ADT. I'm really happy I found them while searching online, they have made my job much easier.
Exodus Heath - 2/13/2025
Where do I start?!! ADT is truly the best!! I had the pleasure of speaking with Tori today! She was excellent, professional and truly went above and beyond in her kind, compassionate care and commitment to providing me with the best service possible. I was in such a time crunch, but I was able to call, order the test, pay for it over the phone and get the test I needed within the hour. Not only did this put my mind at ease, they saved my job!! I am forever grateful for this team of hard workers, that care, with such great work ethics! Thank you from the very bottom of my heart!!! If you need a drug, alcohol, etc… screening, this team will be your lifesavers!!
Sarah Patterson - 4/8/2025