Drug & Alcohol Testing Near Me - Maryland

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

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Drug Testing Near Me

Searching for nearby drug testing services? In the state of Maryland and across the nation, Accredited Drug Testing, Inc. stands as a highly regarded provider of same-day drug and alcohol testing, boasting a comprehensive network of over 20,000 locations nationwide. Whether the requirement is for DOT-compliant tests, court-mandated screenings, pre-employment drug tests, or personal drug assessments, we streamline the scheduling process, ensuring it is both swift and confidential. Utilizing certified laboratories and collection sites, we guarantee precise and trustworthy outcomes that adhere to federal and state regulatory standards. To locate a convenient drug testing facility near you, simply dial (800) 221-4291 or use our online scheduling platform available 24/7. When prioritizing safety, compliance, and assurance, Accredited Drug Testing consistently delivers punctual and dependable results 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

In Maryland and across the country, urine drug testing is the most widely utilized screening method and is the exclusive test type sanctioned for DOT-regulated drug testing under 49 CFR Part 40. By evaluating a urine sample for drugs, drug by-products, or alcohol markers, recent substance use can be detected. This standardized and confidential procedure ensures the delivery of precise, legally rigorous results for employers, individuals, and legally ordered programs.

Testing Methods & Collection Process

1. Donor Identity Verification

The donor must present a legitimate government-issued ID and complete the necessary chain-of-custody signatures before initiation of testing.

2. Secure Collection Environment

Urine samples are collected in secured restroom facilities to deter tampering, often involving restrictions on personal belongings, securing water sources, and dyeing toilet water as part of security norms.

3. Chain of Custody Documentation

A federally endorsed Chain of Custody Form (CCF) meticulously tracks the sample's journey from collection through to laboratory analysis, preserving the test's integrity and legal viability.

4. Temperature & Validity Checks

Post-collection, the specimen is scrutinized for temperature and appearance accuracy. Additionally, validity testing including checks for creatinine levels, pH, specific gravity, and adulterant presence is conducted.

5. DOT Split Specimen

DOT urine tests involve bifurcation into two vials: Bottle A is utilized for primary analysis and Bottle B for retesting in case of a challenge. For non-DOT tests, a single vial is collected.

6. Laboratory Screening & Confirmation

Samples are processed in SAMHSA-certified laboratories through a dual-step process:

  • Initial Immunoassay Screen: Detects drug classes.
  • Confirmation Testing: Utilizes GC/MS or LC/MS to identify specific drugs or metabolites.

7. MRO Verification

Non-negative results are substantiated by a licensed Medical Review Officer (MRO), who validates the data and discusses any possible medical justifications with the donor prior to final result dissemination.

How Long Do Urine Test Results Take?

  • Instant Urine Test: Immediate feedback for negative results; positives are forwarded to the lab for confirmation typically taking 24-72 hours.
  • Lab-Based Urine Test: 24-48 hours for most negatives.
  • DOT Drug Test: Generally 1-3 business days, factoring in MRO review and donor communication.
  • Urine EtG Alcohol Test: Typically processed within 24-48 hours.

Additional processing time may be necessary for situations involving shy bladders, invalid samples, or where lab validation and donor interaction are essential.

Advantages of Urine Drug & Alcohol Testing

  • The only DOT-endorsed method meeting federal regulation criteria.
  • Detects recent use, especially beneficial in workplace and post-incident analyses.
  • Cost-effective with rapid result delivery.
  • Universally accepted by courts, employers, and governmental bodies.
  • Immediate testing options available for rapid evaluation.
  • Highly precise confirmations via GC/MS or LC/MS technology.

Limitations of Urine Drug & Alcohol Testing

  • Limited detection window (generally 1-7 days for most drugs).
  • Requires stringent security to prevent tampering.
  • Doesn't reflect long-term usage patterns.
  • Necessitates accessible restroom and detailed collection protocols.
  • Standard tests don't detect alcohol unless specifically testing for EtG/EtS.

Despite these limitations, urine tests remain the leading choice for drug and alcohol detection across the nation.

How Hair Drug Testing Works

In Maryland and beyond, hair drug and alcohol testing serves as a robust laboratory technique, capable of illustrating extensive histories of substance use. Diverging from urine testing which identifies recent substance intake, hair analysis offers a considerable 90-day detection period through drug metabolites lodged within the hair shaft. This testing modality is invaluable for workplace settings, legal cases, child welfare issues, and any scenario necessitating an expansive historical perspective on substance consumption.

Testing Methods & Collection Process

1. Donor Identity Verification

Embarking on the collection process, donors provide a valid government-issued identification, alongside necessary consent and chain-of-custody endorsements, to ensure flawless documentation.

2. Hair Collection Procedure

A trained specialist meticulously sources a small hair specimen—around 100-120 strands—from near the scalp's surface, with the crown being the preferred site. In situations devoid of head hair, body hair may suffice. The procedure remains swift, painless, and conducted with close supervision.

3. Chain of Custody Documentation

A Hair Drug Test Custody and Control Form is meticulously completed to document the collection, sealing, and handover of the specimen, guaranteeing legal defensibility and secure handling throughout the evaluation phase.

4. Laboratory Preparation & Analysis

Upon arrival at the laboratory, the sample goes through several forensic steps:

The sample then advances through sensitive laboratory analysis steps:

5. Metabolite Detection

Drug by-products integrate into the hair shaft as it grows, creating a stable, enduring account of substance usage. As these metabolites reside internally, it becomes highly challenging to falsify or alter the results of hair testing.

6. MRO Review

A certified Medical Review Officer scrutinizes all non-negative findings to verify accuracy, weighs potential medical justifications, and formally concludes with results issuance.

How Long Do Hair Test Results Take?

Due to its intricate laboratory processing, hair testing entails longer turnaround times than urine testing but affords unparalleled consistency in detection.

Advantages of Hair Drug & Alcohol Testing

  • 90-day detection period for longitudinal substance analysis.
  • Uncommonly difficult to falsify or adulterate.
  • Charts patterns of ongoing, sporadic, or ceased drug use.
  • Suitability for legal situations, child custody cases, and regulatory adherence scenarios.
  • Non-intrusive and prompt collection process.
  • Exemplary validation capabilities through GC/MS or LC/MS analyses.

Limitations of Hair Drug & Alcohol Testing

  • Inability to detect very recent usage (first 5-7 days post-use).
  • Costlier relative to urine or oral fluid evaluations.
  • Body hair cannot furnish a precise detection timeline.
  • Substance incorporation may vary with hair type and growth trajectory.
  • Not authorized for DOT testing compliance.

Despite such limitations, hair testing continues to be a highly dependable approach for unearthing long-term substance engagement and is pervasively utilized by employers, legal experts, and individuals in pursuit of accurate and tamper-resilient results.


Alcohol & Drug Testing-How Each Method Works

Within Maryland 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

Extremely polite

They were very fast extremely polite walked you through every detail of the process if you had any questions they had no problems answering

Billy Williams - 2/19/2025

Hassle Free Experience

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

Quick, Polite, Informative

Everyone has been quick to respond, polite, informative. It's been easy to order tests. I would recommend them to anyone to use.

April Rogers - 2/15/2025

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

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


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