Drug & Alcohol Testing Near Me - Largo, MD

Accredited Drug Testing provides drug and alcohol testing services at multiple locations throughout your local area.  

Employment, DOT, Court Ordered, Personal
Urine | Hair Follicle | Oral Fluid | Blood | ETG

29 Drug-Testing Centers in Largo

Minutes Away, Test Today

11947 Winged Foot Ct1.00 miles

11947 Winged Foot Ct
Waldorf, MD 20602

1600a Brightseat Rd Apt 3011.15 miles

1600a Brightseat Rd Apt 301
Hyattsville, MD 20785

11435 Abbottswood Ct1.31 miles

11435 Abbottswood Ct
Upper Marlboro, MD 20774

11435 Abbottswood Ct1.31 miles

11435 Abbottswood Ct
Largo, MD 20774

8700 Central Ave Ste 2041.41 miles

8700 Central Ave Ste 204
Landover, MD 20785

9141 Alaking Ct Ste 1122.10 miles

9141 Alaking Ct Ste 112
Capitol Heights, MD 20743

12555 Central Ave. Ste A&f2.20 miles

12555 Central Ave. Ste A&f
Chino, CA 91710

3510 Heidi Ln2.81 miles

3510 Heidi Ln
Springdale, MD 20774

Onsite Only3.42 miles

Onsite Only
Largo, MD 20774

4451 Parliament Pl Ste G3.57 miles

4451 Parliament Pl Ste G
Lanham, MD 20706

12200 Annapolis Rd, Suite 1204.96 miles

12200 Annapolis Rd, Suite 120
Glenn Dale, MD 20769

4355 Forestville Rd Apt 3025.33 miles

4355 Forestville Rd Apt 302
Forestville, MD 20747

3060 Mitchellville Rd5.65 miles

3060 Mitchellville Rd
Bowie, MD 20716

10117 Palamar Dr6.05 miles

10117 Palamar Dr
Lanham, MD 20706

4121 Minnesota Ave Ne6.26 miles

4121 Minnesota Ave Ne
Washington, DC 20019

4000 Mitchellville Rd Ste A112,6.65 miles

4000 Mitchellville Rd Ste A112,
Bowie, MD 20716

7933 Belle Point Dr7.62 miles

7933 Belle Point Dr
Greenbelt, MD 20770

6201 Greenbelt Rd, Suite M37.98 miles

6201 Greenbelt Rd, Suite M3
College Park, MD 20740

5606 Holton Ln8.51 miles

5606 Holton Ln
Temple Hills, MD 20748

920 Varnum St Ne9.34 miles

920 Varnum St Ne
Washington, DC 20017

10452 Baltimore Ave10.13 miles

10452 Baltimore Ave
Beltsville, MD 20705

4729 Sellman Rd10.41 miles

4729 Sellman Rd
Beltsville, MD 20705

911 U St Nw10.55 miles

911 U St Nw
Washington, DC 20001

3422 Georgia Ave Nw10.67 miles

3422 Georgia Ave Nw
Washington, DC 20010

7700 Old Branch Ave E10810.86 miles

7700 Old Branch Ave E108
Clinton, MD 20735

815 Connecticut Ave Nw11.17 miles

815 Connecticut Ave Nw
Washington, DC 20006

1145 19th St Nw Ste 60111.45 miles

1145 19th St Nw Ste 601
Washington, DC 20036

1145 19th Street Nw Suite 50611.46 miles

1145 19th Street Nw Suite 506
Washington, DC 20036

1140 19th St Nw Ste 70011.48 miles

1140 19th St Nw Ste 700
Washington, DC 20036

Drug Testing Near Me

Are you in search of nearby drug testing services? Accredited Drug Testing, Inc. stands as a reliable choice across the United States, offering prompt drug and alcohol testing solutions, including numerous options available in Largo, MD. With a network exceeding 20,000 locations nationwide, you can confidently access testing for DOT regulations, court mandates, employment screenings, and personal needs. We assure an easy, fast, and discreet booking process. Our facilities are recognized for providing impeccable accuracy, maintaining compliance with both federal and state standards. Connect with us at (800) 221-4291 or book online around the clock for a convenient testing location within your reach. Ensure safety, adherence, and peace of mind, choosing Accredited Drug Testing for results you can trust every time.

Drug and Alcohol Testing Options

Urine Drug Testing Available Panels
5 Panel Drug Test (DOT/NON DOT)
5 Panel + Alcohol Drug Test
5 Panel + ETG Alcohol Drug Test
10 Panel Drug Test
10 Panel + ETG Alcohol Drug Test
12 Panel Drug Test
Hair Drug Testing Available Panels
5 Panel Hair Drug Test
5 Panel + ETG Hair Drug Test
10 Panel Hair Drug Test
12 Panel Hair Drug Test
14 Panel Hair Drug Test
16 Panel Hair Drug Test
Alcohol Drug Testing Available Panels
Alcohol Urine Drug Test
ETG Alcohol Test (Urine)
Breath Alcohol Test
Blood Alcohol Test
Peth Alcohol Blood Test
ETG Alcohol Test (Hair)

Customized Testing Options Available l Discounts available for Bulk Purchases l Onsite Drug Testing Services

How Urine Drug Testing Works

The urine drug test is the most widespread method utilized across the nation and is sanctioned exclusively for DOT-regulated assessments as defined under 49 CFR Part 40. This process detects recent substance exposure by examining a urine specimen for drugs, their metabolites, or even alcohol markers. Its design aims for standardized, confidential handling to secure precise and legally sound results suitable for employers, individuals, and judicial requirements within Largo, MD.

Testing Techniques & Collection Procedures

1. Confirming Donor Identity

The donor is required to present a valid government ID and complete necessary chain-of-custody documentation before proceeding.

2. Controlled Collection Environment

Urine samples are gathered in a monitored restroom, securing against any tampering, with standard security measures like restrictions on personal items and colored toilet water.

3. Documentation of Custody

A federally mandated Chain of Custody Form (CCF) follows the specimen from collection to lab analysis, upholding the sample's integrity and its legal defensibility.

4. Verifying Temperature & Validity

After collection, the sample's temperature is checked, while the lab later performs checks for validity, including creatinine, pH, specific gravity, and potential adulterants.

5. DOT Split Samples

DOT tests involve splitting the urine into two containers: one for primary testing, and the second (the B bottle) for retesting should dispute arise. Non-DOT tests typically use a single container.

6. Screening & Confirming in Laboratories

With SAMHSA-certified labs, samples are subjected to:

  • Initial Immunoassay Screening: Determines class presence of drugs.
  • Confirmation Testing: Uses GC/MS or LC/MS for pinpoint identification of drugs or metabolites.

7. Verification by MRO

Non-negative findings are reviewed by a licensed Medical Review Officer (MRO), ensuring validity, and exploring medical justifications before finalizing the results.

What is the Duration for Urine Test Results?

  • Instant Urine Test: Negative results on the same day; positive results entail lab confirmation (24-72 hours).
  • Lab-Based Urine Test: 24 to 48 hours for negative outcomes.
  • DOT Drug Test: Typically requires 1-3 business days contingent on MRO assessment and communication with the donor.
  • Urine EtG Alcohol Test: Generally processed within 24-48 hours.

Additional time might be needed for conditions like shy bladder, invalid samples, or extended lab verification.

Urine Drug & Alcohol Testing Advantages

  • DOT sanctioning: yalnızca federal-grade approval for regulated assessments.
  • Effective for recent drug detection, apt for workplace and post-event scenarios.
  • Economically affordable with rapid turnaround times.
  • Broad institutional acceptance from courts, employers, to state agencies.
  • Instant testing alternatives for accelerated detection.
  • High precision confirmed through advanced GC/MS or LC/MS.

Urine Drug & Alcohol Testing Constraints

  • Shortened detection window, within 1-7 days for most substances.
  • Potential for tampering without stringent measures.
  • Incapable of indicating long-term or historical substance use profiles.
  • Requires restroom access and specific gathering protocols.
  • Traditional urine tests do not identify alcohol unless EtG/EtS is executed.

Despite such limitations, urine tests continue as the staple for quick and practical drug and alcohol evaluations nationally.

How Hair Drug Testing Works

Hair substance evaluations are a robust, long-term method for revealing persistent usage over a 90-day period. Unlike urinalysis that notes recent exposure, hair testing maps drug or alcohol metabolite incorporation into the hair, presenting cumulative data suited for employment, legal, custodial, and compliance assessments statewide in Largo, MD.

Procedure & Sampling Method

Result Timeline:

Hair evaluations offer thoroughness surpassing urine tests, though timelines can extend reflecting multi-layered analysis.

Strengths of Hair Evaluations

Constraints of Hair Testing

Despite drawbacks, its reliability ensures it remains a superior method for durable testing across various sectors.

Alcohol & Drug Testing-How Each Method Works

Within Largo, MD and throughout the nation, Accredited Drug Testing facilitates an extensive selection of alcohol and drug screening alternatives, meticulously crafted to satisfy employer, DOT, legal, and personal evaluation demands. Acquainting oneself with the unique aspects of each testing approach assures right selection, credible outcomes, and absolute adherence to federal and state laws. Boasting a broad-ranging network, certified lab facilities, and adept Medical Review Officers, we deliver the precision, reliability, and professional conduct essential for guaranteed testing results.

Alcohol Urine Drug Test

An alcohol urine test discerns recent alcohol use by detecting ethanol by-products in urine. This is a prevalent mechanism for workplace assessments, judicial demands, and post-incident circumstances. While it doesn't gauge immediate intoxication levels, it presents a brief window of detection spanning a few hours, offering a swift and economically sensible assessment option.

ETG Alcohol Test (Urine)

The EtG (Ethyl Glucuronide) urine test is an exceedingly sensitive platform for identifying alcohol use extending up to 80 hours post-consumption. Owing to EtG's nature as a direct ethanol by-product, this test gains considerable usage in courts, rehab setups, and surveillance organizations. It grants a broader detection timeframe than standard urine alcohol assessments and is renowned for its precision and trustworthiness.

Breath Alcohol Test

A breath alcohol test evaluates contemporary impairment by analyzing alcohol concentration within deep lung air. Such tests are executed via DOT-endorsed breath alcohol tools (EBTs), yielding prompt and legally respected outputs. Breath evaluations are mandated for DOT-assigned personnel and are habitually employed for worksite, post-incident, and suspicion-based testing.

Blood Alcohol Test

A blood alcohol test quantifies the current ethanol presence in the bloodstream, positioning it as a highly precise tool for impairment evaluation. Hospitals, law enforcement entities, and legal firms rely on blood alcohol assessments for their accuracy, especially in DUI circumstances, urgent medical care, and crucial legal probes.

PEth Alcohol Blood Test

The PEth (Phosphatidylethanol) blood test highlights chronical or heavy alcohol consumption, unveiling specific alcohol markers within red blood cells. PEth can capture usage up to 2-3 weeks prior and is esteemed as one of the steadiest indicators of prolonged drinking conduct. This test frequently finds application in family law contexts, surveillance setups, treatment institutions, and safety-centric employments assessments.

ETG Alcohol Test (Hair)

The EtG hair alcohol test encompasses a 90-day detection phase by evaluating alcohol by-products assimilated in the hair shaft. This form of testing marks recurring or incessant alcohol intake instead of singular episodes. Judicial setups, child custody disputes, and prolonged surveillance programs depend on hair EtG assessments given their endurance, exactitude, and resistance to interim sobriety initiatives.

Guiding you through with informed expertise, nationally accredited laboratories, and expeditious scheduling, Accredited Drug Testing ensures that each alcohol examination method yields credible, lucid, and standards-compliant outputs, aiding individuals and organizations to remain conscious, assured, and rigorously compliant.


Accredited Drug Testing provides nationwide drug and alcohol screening solutions, including urine, hair, EtG, PEth, and breath alcohol testing. Backed by SAMHSA-certified laboratories, DOT 49 CFR Part 40 compliance, and scientifically validated testing technology, our services ensure accurate, defensible, and confidential results for employers, courts, and individuals.

Frequently Asked Questions

Urine tests detect recent use and are the only option approved for DOT testing under 49 CFR Part 40. Hair tests provide a 90-day detection window per the Society of Hair Testing (SoHT). Alcohol testing options, EtG, breath, blood, or PEth. These tests can identify recent use, impairment, or long-term drinking behavior depending on the method.

Urine: 24 - 48 hrs for negatives (SAMHSA guidelines).
Hair: 2 - 5 business days due to multi-step forensic processing (SoHT).
Breath Alcohol: Immediate results using NHTSA-approved EBT devices.
PEth: 3 - 5 days based on forensic toxicology studies.

Lab confirmation using GC/MS or LC/MS is the gold standard per SAMHSA & DOT.
Hair testing is highly tamper-resistant (SoHT).
PEth is considered the most reliable marker of repeated drinking (Journal of Analytical Toxicology).

No. DOT-regulated urine tests require validity checks and chain-of-custody documentation (49 CFR Part 40). Hair tests undergo decontamination and metabolite extraction (SoHT), making them extremely difficult to adulterate.

EtG urine detects alcohol for up to 80 hours (NIH/SAMHSA studies). EtG hair detects chronic alcohol consumption for up to 90 days (SoHT alcohol guidelines).

5 Panel DOT:49 CFR Part 40. Expanded non-DOT panels add benzodiazepines, barbiturates, methadone, oxycodone, MDMA, fentanyl, and more (SAMHSA forensic panel standards).

PEth blood testing identifies long-term and heavy alcohol use for 2 - 4 weeks. Used in child custody, treatment monitoring, and professional compliance programs (CDC & Journal of Analytical Toxicology).

Hair testing does not detect drug use within the past 5 - 7 days. It identifies long-term or repetitive use patterns per SoHT standards.

Yes. Results follow strict chain-of-custody procedures, DOT/SAMHSA requirements, GC/MS or LC/MS confirmation, and MRO review; making them acceptable in court, DOT, and legal settings.

Yes. Accredited Drug Testing offers same-day appointments at 20,000+ locations nationwide, instant testing options, and onsite employer testing with bulk discounts.

Customer Reviews

Very Fun and Easy

Trish last week and Tatiana this week, very fun and easy folks to deal with. Well be using them more and more in the future.

Tom O - 12/19/2024

Super Easy!

Super easy to set up an appointment through the phone. They walked me through all the steps and found me a location right near my house. Would definitely recommend!

Aldita Lumaj - 1/17/2025

Accredited has been wonderful to work with!

Accredited has been wonderful to work with! My court ordered tests are on a very strange schedule but every time I call, they are quick to schedule me and are always able to find a location that works for where I’m at and when! Thank you for making this rather undesirable situation less stressful and efficient.

Madison Sanderford - 8/19/2024

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


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(800) 221-4291