DOT CONSORTIUM ENROLLMENT - Los Fresnos, TX

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

All Random Test Fees Included

With 36 testing centers in the Los Fresnos 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.

  • 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

36 DOT Drug-Testing Centers in Los Fresnos

Minutes Away, Test Today

1601 E Alton Gloor Blvd Ste 109

6.30 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1601 E Alton Gloor Blvd Ste 109
Brownsville, TX 78526

300 Lorenaly Dr Ste C

7.14 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
300 Lorenaly Dr Ste C
Brownsville, TX 78526

2031 E Price Rd Ste C

9.45 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
2031 E Price Rd Ste C
Brownsville, TX 78521

1755 W Price Rd

9.51 mi
🕑 Testing Hours: ✓ Walk-in with Electronic Donor Pass
1755 W Price Rd
Brownsville, TX 78520

500 Paredes Line Rd Ste 6

9.71 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
500 Paredes Line Rd Ste 6
Brownsville, TX 78521

425 E Los Ebanos Blvd Ste 100-104

9.85 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
425 E Los Ebanos Blvd Ste 100-104
Brownsville, TX 78520

1200 State Highway 100 Ste 5

10.25 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1200 State Highway 100 Ste 5
Port Isabel, TX 78578

2952 Boca Chica Blvd

10.41 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
2952 Boca Chica Blvd
Brownsville, TX 78521

351 N Sam Houston Blvd

10.42 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
351 N Sam Houston Blvd
San Benito, TX 78586

3302 Boca Chica Blvd Ste 109

10.43 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3302 Boca Chica Blvd Ste 109
Brownsville, TX 78521

864 Central Blvd Ste 900

10.75 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
864 Central Blvd Ste 900
Brownsville, TX 78520

5235 Southmost Rd

12.65 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
5235 Southmost Rd
Brownsville, TX 78521

1100 N Expressway # 83 Ste 3

13.22 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1100 N Expressway # 83 Ste 3
Brownsville, TX 78521

512 Victoria Ln Ste 7

13.66 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
512 Victoria Ln Ste 7
Harlingen, TX 78550

1901 Bell St Ste B

14.16 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1901 Bell St Ste B
Harlingen, TX 78550

721 W Harrison Ave

16.25 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
721 W Harrison Ave
Harlingen, TX 78550

1402 S M St Ste 3

16.35 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1402 S M St Ste 3
Harlingen, TX 78550

1214 Dixieland Rd Ste 8

16.92 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1214 Dixieland Rd Ste 8
Harlingen, TX 78552

1214 Dixieland Rd Ste 8

16.92 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1214 Dixieland Rd Ste 8
Harlingen, TX 78552

216 N Ed Carey Dr Ste 1

17.37 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
216 N Ed Carey Dr Ste 1
Harlingen, TX 78550

5505 S Expressway 77 Ste 103

17.46 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
5505 S Expressway 77 Ste 103
Harlingen, TX 78550

3808 Padre Blvd

19.28 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3808 Padre Blvd
South Padre Island, TX 78597

1221 East 10th St, Suite 101-a

31.27 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1221 East 10th St, Suite 101-a
Weslaco, TX 78596

1710 E 8th St

31.34 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1710 E 8th St
Weslaco, TX 78596

1102 S Airport Bldg 2

31.39 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1102 S Airport Bldg 2
Weslaco, TX 78596

624 N Tio Ave Ste B

31.55 mi
🕑 Testing Hours: Mon–Fri: 9:00 AM-4:00 PM✓ Walk-in with Electronic Donor Pass
624 N Tio Ave Ste B
Weslaco, TX 78596

7701 Yvette Cir Ste 2

31.99 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
7701 Yvette Cir Ste 2
Mercedes, TX 78570

2602 W Expressway 83 Ste 2

32.38 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2602 W Expressway 83 Ste 2
Weslaco, TX 78596

1210 W Expressway 83 Ste B

32.38 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1210 W Expressway 83 Ste B
Weslaco, TX 78596

336 S 8th St

33.94 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
336 S 8th St
Raymondville, TX 78580

165 S 6th St

34.10 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
165 S 6th St
Raymondville, TX 78580

427 E Duranta Ave Ste 103

39.63 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
427 E Duranta Ave Ste 103
Alamo, TX 78516

200 E Interstate 2 Ste Q

44.60 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
200 E Interstate 2 Ste Q
Pharr, TX 78577

220 S Cage Blvd Ste C

44.72 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
220 S Cage Blvd Ste C
Pharr, TX 78577

6201 South Cage Blvd Ste 6

44.76 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
6201 South Cage Blvd Ste 6
Pharr, TX 78577

1106 W Sam Houston St

44.87 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1106 W Sam Houston St
Pharr, TX 78577

Agency Coverage & Current Minimum Random Rates

Percentages are set by each DOT agency and may change.

FMCSA: Federal Motor Carrier Safety Administration

Employers governed by 49 CFR 382.305 must sustain a compliant random drug and alcohol testing program. Owner-operators must be part of a consortium comprising at least two covered employees to ensure regulatory compliance within Los Fresnos, TX.

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

USCG: United States Coast Guard (currently under the jurisdiction of Homeland Security)

Marine employers, governed by 46 CFR Part 16.230, are obligated to execute random drug tests for crewmembers engaged in safety-sensitive roles. This legislation applies uniformly across all states, including Los Fresnos, TX, promoting a commitment to maritime safety standards.

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

FAA: Federal Aviation Administration - Los Fresnos, TX Compliance Requirements

Employers in Los Fresnos, TX governed by 14 CFR Part 120 must ensure that all roles involving safety-sensitive tasks are covered under the testing regulations.

  • 25% - DOT 5-panel urine tests for Controlled Substances.
  • 10% - Breath Alcohol Testing (BAT) to meet FAA requirements.
FAA Enroll Today

FRA- Federal Railroad Administration

The Federal Railroad Administration necessitates that railroads devise and adhere to an FRA-ratified random plan outlined in 49 CFR 219.601-219.609. Los Fresnos, TX, aligning with nationwide standards, ensures these actions contribute to a secure rail transport framework.

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 in Los Fresnos, TX operating under 49 CFR Part 655 must implement a scientifically validated method for selecting employees for testing. This regulatory requirement is crucial for maintaining transportation safety and compliance in the region.

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

PHMSA- Pipeline & Hazardous Materials Safety Administration

Operators, including those in Los Fresnos, TX, subject to Parts 192, 193, or 195, are mandated to conduct testing of covered employees in accordance with 49 CFR Part 199.

  • 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 is a DOT Consortium (C/TPA) and who needs it?

  • A consortium C/TPA is responsible for the administration of part or all of an employer's drug and alcohol testing program, encompassing random testing pools and other compliance activities as mandated by 49 CFR part 40.

Are random testing percentages always the same or do they change?

  • Random testing rates set by the DOT can fluctuate yearly according to the positivity rate. However, in our consortium, regardless of these variations, all fees for DOT random testing are covered.

What happens when I am selected for a random test?

  • If chosen for a random test, ADT will alert the company's DER or owner-operator via email or phone, providing the nearest test site and necessary guidance. The selected individual must report to the testing location immediately upon notification.

What drugs are tested on a DOT drug test?

  • A DOT drug test includes a DOT 5 panel urine analysis and a DOT breath alcohol test. It is essential to ensure that these tests are conducted on a Federal CCF and a Federal Alcohol Testing Form.

Can you help during a DOT audit or inspection?

  • Absolutely, ADT can assist by compiling necessary documentation such as pre-employment tests, proof of random pool participation, supervisory training certificates, DOT policy development, and MIS reports.

How often can I update my employee pool?

  • Employee pool updates are confirmed quarterly, and employers have the flexibility to add or remove covered employees at any time before selection dates.

Find a DOT Drug Test Center Near You

Enter your zip code to find nearby test centers

Los Fresnos Drug Testing

Quickly find trusted local drug testing centers in Los Fresnos, TX — fast, convenient, and reliable every time!

Los Fresnos DOT Drug Testing

Quickly find a local DOT drug testing center in Los Fresnos, TX — fast, reliable, convenient nationwide service!

Los Fresnos DNA Testing

DNA testing for legal and non-legal purposes including child support, and child custody around Los Fresnos, TX.

Los Fresnos Industry Training

Including specimen collector training, DER training, reasonable suspicion training and much more in Los Fresnos, TX.v

Los Fresnos Hair Drug Testing

Get fast, accurate hair drug testing at our convenient Los Fresnos, TX locations—results you can trust, every time!

Los Fresnos Alcohol Testing

Fast, reliable alcohol testing to keep your workplace safe and compliant every single day in Los Fresnos, TX.

Los Fresnos Drug Testing Services

Reliable nationwide drug testing services ensuring accuracy, compliance, and quick results for businesses and individuals in Los Fresnos, TX.

Los Fresnos 5 Panel Drug Test

Accurate 5 panel drug testing with fast, confidential results—trusted by Los Fresnos, TX employers and individuals nationwide.

Los Fresnos 10 Panel Drug Test

Comprehensive 10 panel drug testing with fast, reliable results—trusted for Los Fresnos, TX workplace and personal testing needs.

Los Fresnos On Site Drug Testing

Convenient on-site mobile drug testing with fast, reliable results—saving time while keeping your Los Fresnos, TX workplace compliant.

Los Fresnos DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Los Fresnos, TX drivers compliant and on the road with confidence.

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

Excellent service!

Excellent service! Trish went above and beyond to find me a testing site as close to my home as possible. Results were faster than expected, as well. Thanks for your help, Trish and Accredited!

Es Hache - 4/13/2025

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

Saved My CDL!

Time was running out before my Cdl got downgraded because of a violation I had on clearinghouse. I couldn't find an employer to send me for my return to duty test, but these guys had my test scheduled and done in the same day! They saved my cdl. Thank you again!

Michael Williams - 12/2/2024

Super helpful and courteous

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

Had very fast and good service

Had very fast and good service, was able to get an appointment same day with the nearest facility. My questions were answered thoroughly but quick. Definitely recommend

Jacob Matzke - 11/19/2024

Great experience

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

Jenna Bee - 2/19/2025

Super Easy to Schedule

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

Great service

Great service easy use quick processing! Need a hair follicle for my DCFS case , quick and convenient!

Jesse Dupre - 4/12/2025

Very professional and very quick

Very professional and very quick service to schedule appointments! I am pleased with the services and would definitely recommend using them for any drug testing needs!

Carrie Feerick - 4/19/2025

I love the customer service

I love the customer service. The lady was patient enough to help me book my appointment with ease and ensuring I get the location that's best for me. Keep up the good work!

Elizabeth Chiaka - 9/19/2024


(800) 221-4291