DOT CONSORTIUM ENROLLMENT - Castroville, TX

Random Drug & Alcohol Testing Program
FMCSA - FAA - USCG - FTA - FRA - PHMSA

All Random Test Fees Included


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.

  • We offer 1, 2 and 3 year memberships (multi-year discounts)
  • All random selection testing and testing fees included (no hidden costs)
  • MIS report at year-end and upon request
  • DER support, Clearinghouse assistance (FMCSA), DOT Physicals, MVR Reports & Supervisor Training

Why is a DOT Consortium Required?

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

  • All random selection test fees (drug & alcohol where applicable)
  • DER support & audit-ready documentation
  • Federal CCFs (5-part) for DOT drug tests
  • FMCSA Clearinghouse registration assistance
  • Policy templates (DOT Drug & Alcohol)
  • Supervisor reasonable-suspicion training options

31 DOT Drug-Testing Centers in Castroville

Minutes Away, Test Today

1501 Houston St0.64 miles

1501 Houston St
Castroville, TX 78009

3903 Wiseman Blvd Suite 21913.89 miles

3903 Wiseman Blvd Suite 219
San Antonio, TX 78251

3100 Avenue E15.42 miles

3100 Avenue E
Hondo, TX 78861

4436 Culebra Rd Ste 318.31 miles

4436 Culebra Rd Ste 3
San Antonio, TX 78228

6430 Bandera Rd Ste 9818.57 miles

6430 Bandera Rd Ste 98
San Antonio, TX 78238

6100 Bandera Road, Suite 40018.66 miles

6100 Bandera Road, Suite 400
San Antonio, TX 78238

9234 N Loop 1604 W Ste 11018.71 miles

9234 N Loop 1604 W Ste 110
San Antonio, TX 78249

5720 Bandera Rd Ste 1418.98 miles

5720 Bandera Rd Ste 14
San Antonio, TX 78238

115 Duncan Dr19.30 miles

115 Duncan Dr
San Antonio, TX 78226

3015 General Hudnell Dr19.45 miles

3015 General Hudnell Dr
San Antonio, TX 78226

9727 Poteet Jourdanton Fwy Ste 10119.81 miles

9727 Poteet Jourdanton Fwy Ste 101
San Antonio, TX 78211

9727 Poteet Jourdanton Fwy Ste 10519.81 miles

9727 Poteet Jourdanton Fwy Ste 105
San Antonio, TX 78211

7400 Barlite Blvd20.01 miles

7400 Barlite Blvd
San Antonio, TX 78224

7390 Barlite Blvd Ste 13520.03 miles

7390 Barlite Blvd Ste 135
San Antonio, TX 78224

5282 Medical Dr Ste 19020.44 miles

5282 Medical Dr Ste 190
San Antonio, TX 78229

2040 Babcock Rd Ste 10120.60 miles

2040 Babcock Rd Ste 101
San Antonio, TX 78229

2040 Babcock Rd Ste 30320.60 miles

2040 Babcock Rd Ste 303
San Antonio, TX 78229

4241 Woodcock Dr Ste A12520.72 miles

4241 Woodcock Dr Ste A125
San Antonio, TX 78228

8042 Wurzbach Rd Ste 14021.23 miles

8042 Wurzbach Rd Ste 140
San Antonio, TX 78229

4411 Medical Drive, Ste 17021.30 miles

4411 Medical Drive, Ste 170
San Antonio, TX 78229

6222 Deiavala #10421.60 miles

6222 Deiavala #104
San Antonio, TX 78249

2406 Commercial Ave Ste 11121.84 miles

2406 Commercial Ave Ste 111
San Antonio, TX 78221

12703 Mountain Air Ste 10521.94 miles

12703 Mountain Air Ste 105
San Antonio, TX 78249

3355 Cherry Ridge St Ste 103b22.54 miles

3355 Cherry Ridge St Ste 103b
San Antonio, TX 78230

5222 De Zavala Rd Ste 30422.74 miles

5222 De Zavala Rd Ste 304
San Antonio, TX 78249

12651 Vance Jackson Rd Ste 11422.89 miles

12651 Vance Jackson Rd Ste 114
San Antonio, TX 78230

343 W Houston St Ste 30823.47 miles

343 W Houston St Ste 308
San Antonio, TX 78205

1303 Mccullough Ave Ste 136,23.98 miles

1303 Mccullough Ave Ste 136,
San Antonio, TX 78212

400 E Quincy St23.98 miles

400 E Quincy St
San Antonio, TX 78215

710 Augusta St24.08 miles

710 Augusta St
San Antonio, TX 78215

1200 Brooklyn Ave Ste 16524.08 miles

1200 Brooklyn Ave Ste 165
San Antonio, TX 78212

Agency Coverage & Current Minimum Random Rates

Percentages are set by each DOT agency and may change.

FMCSA: Federal Motor Carrier Safety Administration

In the state of Castroville, TX, employers bound by 49 CFR 382.305 must uphold a compliant random testing program. Owner-operators are required to join a consortium pool encompassing at least two covered employees.

  • 50%- Controlled Substances (DOT 5-panel urine)
  • 10%- DOT Breath Alcohol Testing (BAT)
FMCSA Enroll Today

USCG- United States Coast Guard (now under Homeland Security)

Marine employers in Castroville, TX, under 46 CFR Part 16.230, must conduct random drug testing focusing on safety-sensitive crewmembers. This stringent regulation ensures that those in critical operational roles are always clear-headed and fit for duty.

  • 50% - Controlled Substances (DOT 5-panel urine)
  • Alcohol - Not applicable for USCG random minimums
USCG Enroll Today

FAA- Federal Aviation Administration

Under 14 CFR Part 120, employers must ensure that all safety-sensitive job functions are included, an imperative also applicable in Castroville, TX.

  • 25%- Controlled Substances (DOT 5-panel urine)
  • 10%- Breath Alcohol Testing (BAT)
FAA Enroll Today

FRA- Federal Railroad Administration

Railroads in Castroville, TX must adhere to a random testing plan approved by the FRA, as stipulated in Â49 CFR 219.601-219.609. This ensures that safety and regulatory compliance is maintained at all times within the state and nationally.

Employee Category Drugs Alcohol
Covered Service 25% 10%
Maintenance of Way / Roadway Workers 25% 10%
Mechanical 50% 25%
FRA Enroll Today

FTA- Federal Transit Administration

Employers overseen by 49 CFR Part 655 are compelled to utilize a scientifically robust selection methodology. This statute equally applies in Castroville, TX, underpinning efforts to maintain safety and accountability in the public transportation sector.

  • 50%- Drugs
  • 10%-  Alcohol
FTA Enroll Today

PHMSA- Pipeline & Hazardous Materials Safety Administration

Operators governed by Parts 192, 193, or 195 must perform testing of covered employees as per 49 CFR Part 199. This regulation ensures that safety standards are met consistently across all states, including Castroville, TX, particularly for pipeline safety.

  • 50%-Drugs
  • Alcohol- N/A (no PHMSA random alcohol minimum)
PHMSA Enroll Today

Who Must Be in a DOT Random Program?

  • Truck drivers (CDL) & motor carriers
  • Train engineers, conductors, dispatchers
  • Merchant mariners & marine employers
  • Airline pilots, flight attendants, mechanics, ATC
  • Pipeline operations, maintenance & emergency response
  • Transit operations, maintenance & certain CDL roles

Owner-Operators , Small, Medium & Large Employers

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 TODAY

Complete Compliance Package for Independent Operators & Small Companies

  • 1 DOT Drug Test
  • First-year Consortium membership (all randoms included)
  • 1 Supervisor training (reasonable suspicion)
  • 1 DOT Drug & Alcohol Policy
  • 1 Certificate of Compliance

Need more tests? Additional DOT drug tests can be added at a discount.

Enroll Today! (800) 221-4291

Enroll in the DOT Consortium

Enroll Today

Immediate compliance for DOT random testing. Perfect for owner-operators and employers of any size.

  • Quarterly random selections & notifications
  • All random test fees included
  • MIS reporting & audit support
  • CCFs, policy templates, DER guidance

Are there penalties for non compliance?

Failing to comply with DOT drug and alcohol testing requirements can result in severe consequences for both employers and drivers, including:

  • Quarterly random selections & notifications
  • All random test fees included
  • MIS reporting & audit support
  • CCFs, policy templates, DER guidance

DOT Consortium: Frequently Asked Questions

What defines a DOT Consortium (C/TPA), and who needs this service?

A consortium C/TPA acts as a service representative overseeing an employer's drug and alcohol testing protocols, which encompass random testing pools and compliance tasks as per 49 CFR Part 40.

Do random testing percentages remain fixed, or do they fluctuate?

Random testing rates dictated by the DOT might adjust annually, depending on positivity rates. In our consortium, however, the fees for random testing remain unchanged, irrespective of rate adjustments.

What procedure follows a random test selection?

Upon selection for a random test, ADT contacts the company DER or Owner Operator via email/phone, providing them the nearest test site and specific instructions. Immediate action from the selected employee to the testing center is required following notification.

Which substances are subject to testing in a DOT drug test?

DOT drug tests screen for a standard DOT 5-panel urine and include a DOT breath alcohol test. It is essential that all tests utilize a Federal CCF and Federal Alcohol Testing Form.

Can you assist in the event of a DOT audit or inspection?

Absolutely! ADT is equipped to organize necessary documentation, such as pre-employment tests, confirmation of random pool enrollment, supervisor training certificates, DOT policy development, and MIS reports.

How frequently may I update my employee pool?

We facilitate updates to employee rosters quarterly, though employers are at liberty to modify their list of covered employees at any point prior to selection dates.

Find a DOT Drug Test Center Near You

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Castroville 5 Panel Drug Test

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Castroville 10 Panel Drug Test

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Castroville On Site Drug Testing

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Castroville DOT Physicals

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DOT Consortium

Join our DOT consortium for hassle-free compliance, random testing management, and reliable driver safety solutions.


Frequently Asked Questions

A DOT Consortium is a program that manages random drug and alcohol testing for DOT-regulated employers and owner-operators. It ensures compliance with federal testing requirements by maintaining a random selection pool, managing notifications, and handling test scheduling and reporting.
All employers and owner-operators who fall under DOT agency regulations — including FMCSA, FAA, FTA, FRA, PHMSA, and USCG — must participate in a random drug and alcohol testing program. Owner-operators must join a third-party consortium to meet compliance standards.
Enrollment includes participation in a DOT-approved random testing pool, random drug and alcohol tests, test scheduling, employee notifications, Certificate of Compliance, and annual MIS reporting. Accredited Drug Testing also provides program administration, policy assistance, and ongoing compliance support.
Enrollment can be completed online at accrediteddrugtesting.com by selecting the DOT Consortium Enrollment option, or by calling (800) 221-4291. Once enrolled, participants receive immediate documentation and compliance materials.
Each enrolled company or owner-operator receives a Certificate of Compliance, MIS reports, and other documentation verifying participation in a DOT-compliant random testing pool. These records help demonstrate compliance during DOT audits or inspections.
Yes. Accredited Drug Testing’s consortium program automatically manages all random selections and notifications. When a driver or employee is selected, Accredited coordinates testing at a nearby collection site and provides results reporting and recordkeeping.

Customer Reviews

Thank You!!

I needed a quick drug test for visitation with my children. I called at 6am they answered and set me up with a place a couple miles from my house to go get the test done, that was on Wednesday, I had the results on Friday afternoon and was able to see my kids on Saturday. Thank you for the help!

Mark Broadhead - 2/12/2025

This is by far the easiest

This is by far the easiest way to get my lab work ordered and paid for. The phone calls are short and to the point. They don’t try to push extra sales on you and when I walk in to the clinic I simply show my donor pass and with in a matter of minutes I’m done. I will continue to use ADT in the future.

Jason Jackson - 7/19/2025

Great experience

Great experience and great lab. Customer service agent was very helpful.

Jenna Bee - 2/19/2025

A very nice company

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

Fantastic Experience

Fantastic experience from the beginning. Jocelyn was very helpful to me as someone who doesn’t have much experience in needing a test. They were very helpful and walked me through the entire process start to finish. Thank you ADT!

Riley Wilson - 2/18/2025

Fast and easy

It was fast and easy a pleasure to talk to the customer service people great service

Peter Villegas - 1/19/2025

Reception is kind and helpful

Reception is kind and helpful , everything quick and simple , best urgent care

Yusuf Narmuradov - 11/19/2024

test was quick and easy

Company New Hire Employee Process for DOT Drug test was quick and easy. No need to make appt. All employee had to do is show prepaid qr code I sent to employee show ID and was set. Would Recommend.

Maria Lopez - 11/19/2024

Friendly and Knowledgeable

I reached out Accredited Drug Testing/Secure Screenings to partner for my drug testing business (Discovery Diagnostics Columbia SC) and the process was extremely easy. I worked with Sicilia who was amazing. She was friendly & knowledgeable, and answer all of my questions with ease.

Kendra Harley - 3/26/2025

ADT was able to get me the best tests

Dealing with allegation’s of drug use that completely false is stressful, ADT was able to get me the best tests, going back the farthest in the same day with as little hassle as possible, I spoke with 1 person and wasn’t transferred once, and they took my payment, and got me my work order for a clinic as close as possible for the service I needed. 5*

Christopher Hansis - 12/19/2024


(800) 221-4291