DOT Drug Testing - Seneca, MD

FMCSA-USCG-FTA-FRA-FAA-PHMSA

With 39 testing centers in the Seneca 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.

39 DOT Drug-Testing Centers in Seneca

Minutes Away, Test Today

2 Lyndhurst Ct

4.14 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2 Lyndhurst Ct
Sterling, VA 20165

21036 Tripleseven Rd

4.72 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
21036 Tripleseven Rd
Sterling, VA 20165

46440 Benedict Dr Ste 108

4.76 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
46440 Benedict Dr Ste 108
Sterling, VA 20164

2 Pidgeon Hill Dr Suite 120,

4.88 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2 Pidgeon Hill Dr Suite 120,
Sterling, VA 20165

21525 Ridgetop Cir Ste 260

4.97 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
21525 Ridgetop Cir Ste 260
Sterling, VA 20166

42010 Village Center Plz

6.12 mi
🕑 Testing Hours: Mon–Sat: 8:00 AM-8:00 PM✓ Walk-in with Electronic Donor Pass
42010 Village Center Plz
Stone Ridge, VA 20105

14800 Physicians Ln Ste 131

7.00 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
14800 Physicians Ln Ste 131
Rockville, MD 20850

12321 Middlebrook Road Suite 101

7.46 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
12321 Middlebrook Road Suite 101
Germantown, MD 20879

21785 Filigree Ct

7.80 mi
🕑 Testing Hours: Mon–Fri: 7:30 AM-3:30 PM • Sat: 7:00 AM-10:30 AM✓ Walk-in with Electronic Donor Pass
21785 Filigree Ct
Ashburn, VA 20147

9707 Medical Center Dr Ste 120,

7.82 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-11:00 AM & 1:00 PM-2:30 PM✓ Walk-in with Electronic Donor Pass
9707 Medical Center Dr Ste 120,
Rockville, MD 20850

21785 Filigree Court, Suite 20,

7.84 mi
🕑 Testing Hours: Mon–Fri: 7:30 AM-3:30 PM • Sat: 7:00 AM-10:30 AM✓ Walk-in with Electronic Donor Pass
21785 Filigree Court, Suite 20,
Ashburn, VA 20147

106 Elden St Ste 18b,

7.85 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
106 Elden St Ste 18b,
Herndon, VA 20170

12321 Middlebrook Rd

7.86 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-8:00 PM • Sat:,Sun: 8:00 AM-4:00 PM✓ Walk-in with Electronic Donor Pass
12321 Middlebrook Rd
Germantown, MD 20874

208 Elden St

7.92 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
208 Elden St
Herndon, VA 20170

15005 Shady Grove Rd Ste 450

8.08 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
15005 Shady Grove Rd Ste 450
Rockville, MD 20850

19785 Crystal Rock Dr

8.14 mi
🕑 Facility: Mon–Fri: 07:00 AM - 04:00 PM⚡ Drug Screens: Mon–Fri: 08:00 AM - 03:00 PM
19785 Crystal Rock Dr
Germantown, MD 20874

19785 Crystal Rock Dr, Ste 308

8.19 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
19785 Crystal Rock Dr, Ste 308
Germantown, MD 20874

15225 Shady Grove Road, Suite 207

8.29 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-11:30 AM & 1:00 PM-2:00 PM✓ Walk-in with Electronic Donor Pass
15225 Shady Grove Road, Suite 207
Rockville, MD 20850

45305 Catalina Ct Ste 103

8.65 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
45305 Catalina Ct Ste 103
Sterling, VA 20166

462 Herndon Pkwy Ste 103

8.70 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
462 Herndon Pkwy Ste 103
Herndon, VA 20170

803 Russell Ave

8.71 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
803 Russell Ave
Gaithersburg, MD 20879

431 N Frederick Ave Gaithersburg

8.97 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
431 N Frederick Ave Gaithersburg
Gaithersburg, MD 20877

8945 N Westland Dr

8.97 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
8945 N Westland Dr
Gaithersburg, MD 20877

Po Box 59815

8.97 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
Po Box 59815
Rockville, MD 20859

20528 Boland Farm Rd Ste 205,

9.28 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-11:00 AM & 1:00 PM-3:00 PM✓ Walk-in with Electronic Donor Pass
20528 Boland Farm Rd Ste 205,
Germantown, MD 20876

952 Edwards Ferry Rd Ne

11.01 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
952 Edwards Ferry Rd Ne
Leesburg, VA 20176

Onsite Only

11.29 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
Onsite Only
Ashburn, VA 20148

51 Catoctin Cir Ne

11.76 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
51 Catoctin Cir Ne
Leesburg, VA 20176

222 Catoctin Cir,se, Ste 100

11.85 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
222 Catoctin Cir,se, Ste 100
Leesburg, VA 20175

211 S King St Suite C,

12.39 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
211 S King St Suite C,
Leesburg, VA 20175

100 Maple Ave E

12.87 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
100 Maple Ave E
Vienna, VA 22180

3650 Joseph Siewick Dr Ste 400

13.39 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3650 Joseph Siewick Dr Ste 400
Fairfax, VA 22033

1411 H Service Rd

13.82 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1411 H Service Rd
Chantilly, VA 20151

4200 Pleasant Valley Rd

13.98 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
4200 Pleasant Valley Rd
Chantilly, VA 20151

24801 Pinebrook Rd Attn Lab

14.09 mi
🕑 Testing Hours: ✓ Walk-in with Electronic Donor Pass
24801 Pinebrook Rd Attn Lab
Chantilly, VA 20152

8218 Wisconsin Ave Ste 208

14.36 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
8218 Wisconsin Ave Ste 208
Bethesda, MD 20814

4437 Brookfield Corporate Dr Ste 108

14.59 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
4437 Brookfield Corporate Dr Ste 108
Chantilly, VA 20151

12713 Shoppes Ln

15.33 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
12713 Shoppes Ln
Fairfax, VA 22033

920 W Broad St Ste B

15.50 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
920 W Broad St Ste B
Falls Church, VA 22046

DOT Drug Testing, DOT Consortium, DOT Physicals, FMCSA Clearinghouse, Serving All DOT modes

We have 39 DOT drug testing locations to serve you in and around Seneca, MD.

At our Seneca, MD locations, Accredited Drug Testing offers comprehensive DOT services, including drug and alcohol testing, physicals, consortium enrollment, and more for employers and operators in all modes requiring compliance with 49 CFR Part 40, such as FMCSA, FAA, and USCG. Our centers are conveniently located near your home or workplace, ensuring accessible same-day services.

Choose the DOT service or test you need and select a location nearby. Whether for personal use, employees, or others, our efficient process makes arranging DOT testing in Seneca straightforward.

When you're searching for drug testing near me or drug testing locations, we provide a simple and convenient process to find a drug and alcohol testing location near you that is certified to provide all of your drug and alcohol testing needs.

Seneca, Maryland DOT Services

DOT Drug Testing & Services Available in Seneca, MD:

Our DOT services in Seneca, MD, offered by Accredited Drug Testing, include comprehensive drug and alcohol screenings, meeting federal and local regulations for employee safety and compliance.

DOT Services in Seneca, MD

The DOT regulations ensure the safety of transportation by requiring drug and alcohol screening for employees. In Seneca, Maryland, these rules mandate regular testing and clear policies for affected workers.

Employees in safety-sensitive roles must undergo pre-employment testing, random testing, return-to-duty testing, and post-accident testing to align with overall DOT regulatory standards.

Regular random testing serves as a deterrent to substance abuse, enhancing workforce integrity and safety, especially in transportation hubs like Seneca, MD.

Accredited Drug Testing in Seneca, MD, ensures compliance with DOT standards, offering streamlined procedures to maintain employee safety via effective screening processes.

FMCSA Information

In Seneca, MD, FMCSA regulations mandate routine drug and alcohol tests for safety-sensitive transportation roles, ensuring a safer public transit environment.

Accredited Drug Testing helps Seneca, MD employers meet FMCSA standards by offering reliable drug screening services.

USCG Information

USCG requires maritime workers in Seneca, MD to undergo substance tests to prevent accidents at sea.

Accredited Drug Testing provides essential USCG testing services for Seneca, MD, ensuring maritime safety.

FAA Information

FAA rules in Seneca, MD require aviation employees to complete drug and alcohol tests, ensuring airline safety.

Accredited Drug Testing ensures FAA compliance with accurate testing for Seneca, MD's aviation sector.

FRA Information

FRA mandates drug and alcohol testing for railway employees in Seneca, MD to uphold safety standards.

Accredited Drug Testing services help Seneca, MD railway companies meet FRA requirements efficiently.

FTA Information

The FTA enforces drug testing among Seneca, MD’s public transit workers to ensure passenger safety.

By using Accredited Drug Testing, Seneca, MD, companies can effortlessly adhere to FTA regulations.

PHMSA Information

PHMSA regulations in Seneca, MD require pipeline workers to undergo rigorous drug testing, crucial for maintaining operational safety.

Accredited Drug Testing supports compliance with PHMSA tests, vital in the Seneca, MD transportation sector.

Scheduling in Seneca, MD

To arrange a DOT drug or alcohol test in Seneca, MD, call our local scheduling team at (800) 221-4291 or register online. Our express system is designed to streamline the process, allowing you to select a test and provide required information beforehand.

Your provided zip code will help locate the nearest DOT testing facility in Seneca, Maryland. You'll receive a donor pass with details of the testing site, eliminating the need for appointments in most cases, although pre-registration and payment are mandatory.

Our labs, certified by SAMHSA, ensure test accuracy with results reviewed by our licensed Medical Review Officers (MRO).

Besides Seneca, MD, Accredited Drug Testing operates multiple centers in the metropolitan area, extending coverage throughout nearby cities.

Traveling? Don't worry. Accredited Drug Testing has national presence with over centers, providing flexible scheduling options nationwide, anytime, anywhere.

Maryland Dept. of Transportation Updates

Seneca, MD DUI Statistics

Seneca, Maryland is located within Montgomery County, and DUI incidents are a critical area of concern for the Maryland Department of Transportation (MDOT). Across Montgomery County, DUI cases have shown a consistent pattern of occurrence over the past few years, reflecting a broader statewide trend in Maryland (MD). MDOT and local law enforcement have collaborated on multiple campaigns to reduce DUI offenses, such as increased patrols during peak hours and public awareness programs highlighting the dangers of driving under the influence. Penalties for DUI in Maryland include fines, license suspension, and mandatory alcohol education programs. MDOT reports a slight decrease in DUI-related accidents over recent years, attributing the reduction to these enhanced enforcement efforts and community engagement initiatives within Seneca and surrounding areas.

Drug Involved Accidents in Seneca, MD

Drug-involved accidents in Seneca, Maryland, which is part of Montgomery County, are closely monitored by the Maryland Department of Transportation (MDOT) to assess roadway safety improvements. In recent years, MDOT data suggests an increase in accidents involving drivers under the influence of illegal narcotics, prescription medications, and other impairing substances. Montgomery County has undertaken various measures to combat drug-related traffic incidents, including driver education programs and law enforcement training to recognize impaired driving. Maryland, with its strict drug laws, imposes severe penalties on those arrested for drug-impaired driving, yet awareness and prevention remain key. Public service announcements in Maryland emphasize the potential consequences of driving while under the influence of drugs, contributing to community efforts in Seneca for reducing such incidents.

Marijuana Related Accidents in Seneca, MD

In Seneca, Maryland, the increasing relevance of marijuana-related accidents within Montgomery County has drawn attention from the Maryland Department of Transportation (MDOT). Following the legalization of medical marijuana in Maryland and subsequent decriminalization for recreational use, the state has seen a rise in accidents where marijuana impairment is a factor. Seneca, like other parts of Maryland, has implemented targeted initiatives to manage this trend. These include enhanced law enforcement training on marijuana detection, road safety campaigns dealing with marijuana's effects, and partnerships with local organizations to educate the public on the dangers of driving under marijuana's influence. Despite these efforts, MDOT data indicates that Seneca and other communities in Maryland must maintain vigilance and continue education to curb the incidence of marijuana-related traffic accidents effectively.

Seneca Drug Testing

Quickly find trusted local drug testing centers in Seneca, MD — fast, convenient, and reliable every time!

Seneca DOT Drug Testing

Quickly find a local DOT drug testing center in Seneca, MD — fast, reliable, convenient nationwide service!

Seneca DNA Testing

DNA testing for legal and non-legal purposes including child support, and child custody around Seneca, MD.

Seneca Industry Training

Including specimen collector training, DER training, reasonable suspicion training and much more in Seneca, MD.v

Seneca Hair Drug Testing

Get fast, accurate hair drug testing at our convenient Seneca, MD locations—results you can trust, every time!

Seneca Alcohol Testing

Fast, reliable alcohol testing to keep your workplace safe and compliant every single day in Seneca, MD.

Seneca Drug Testing Services

Reliable nationwide drug testing services ensuring accuracy, compliance, and quick results for businesses and individuals in Seneca, MD.

Seneca 5 Panel Drug Test

Accurate 5 panel drug testing with fast, confidential results—trusted by Seneca, MD employers and individuals nationwide.

Seneca 10 Panel Drug Test

Comprehensive 10 panel drug testing with fast, reliable results—trusted for Seneca, MD workplace and personal testing needs.

Seneca On Site Drug Testing

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

Seneca DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Seneca, MD 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 drug test is a federally regulated drug test required for safety-sensitive transportation employees, such as CDL drivers. It is collected and processed under specific DOT procedures (49 CFR Part 40), including strict chain of custody, certified lab analysis, and documented results appropriate for DOT compliance."
DOT testing applies to employees in safety-sensitive roles, including commercial drivers and other regulated transportation workers. Employers must ensure pre-employment testing, random testing, post-accident testing, reasonable suspicion testing, return-to-duty, and follow-up testing are performed as required."
Yes. Accredited Drug Testing maintains access to DOT-compliant collection sites nationwide. Drivers and employers can schedule testing at a nearby location for required DOT drug and alcohol tests, including urgent post-accident or reasonable suspicion testing."
DOT-required testing includes pre-employment, random, post-accident, reasonable suspicion/reasonable cause, return-to-duty, and follow-up testing. For alcohol, evidential breath testing devices are used to document alcohol concentration following DOT protocol."
Yes. Solo CDL drivers and owner-operators are still subject to DOT testing requirements. They must participate in a compliant random testing program and complete required testing events using DOT-approved processes. Accredited Drug Testing assists in meeting these obligations."
If a DOT drug test screen is not negative, the specimen is sent for confirmatory testing using more specific laboratory methods. Final results are documented and reported according to DOT rules. An employee who has a violation must complete the DOT return-to-duty and follow-up process before resuming safety-sensitive work."
Yes. DOT drug and alcohol test results are released only to authorized employer representatives and are maintained in compliance files for DOT purposes. Results are handled in a controlled and confidential manner."
Yes. Accredited Drug Testing supports urgent post-accident and reasonable suspicion testing because DOT rules require timely documentation of possible impairment following an incident or observed behavior in a safety-sensitive environment."

Customer Reviews

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

Sweet and helpful

Trish was amazing and got me through the sytem very fast and swift. I had a hard time hearing her a couple of times, but she was super sweet and helpful throughout the process. Highly recommend her!

Sophia Schutze - 6/19/2024

Fast and efficient service

Fast and efficient service for employers wanting to do pre employment drug screening that meets DOT requirements!!

Mary Thomas - 4/5/2025

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

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

they have made my job much easier

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

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

Clear and Competent

I was so surprised with the quality of customer service I received today when I called Accredited Drug Testing. The representative was so clear and competent. She was able to reschedule an appointment at my preferred location. The representative whose name is Justice, was so polite and competent. She expedited the whole process. It was a relief to me.

Rachel Padian - 9/6/2024

Unbelievably fast and Easy

Unbelievably fast and Easy, I wont be using Any other provider from now on.

Ren Wisby - 4/19/2025


(800) 221-4291