Drug & Alcohol Testing Near Me - Brentwood, CA

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

40 Drug-Testing Centers in Brentwood

Minutes Away, Test Today

3901 Walnut Blvd Ste A-20.38 miles

3901 Walnut Blvd Ste A-2
Brentwood, CA 94513

1181 Central Boulevard, Suite C0.47 miles

1181 Central Boulevard, Suite C
Brentwood, CA 94513

2400 Balfour Rd Ste 2300.95 miles

2400 Balfour Rd Ste 230
Brentwood, CA 94513

4501 Sand Creek Rd3.17 miles

4501 Sand Creek Rd
Antioch, CA 94531

3450 Hillcrest Ave4.55 miles

3450 Hillcrest Ave
Antioch, CA 94531

3901 Lone Tree Way5.51 miles

3901 Lone Tree Way
Antioch, CA 94509

2339 Buchanan Rd9.28 miles

2339 Buchanan Rd
Antioch, CA 94509

3400 Delta Fair Blvd9.32 miles

3400 Delta Fair Blvd
Antioch, CA 94509

1251 California Ave Ste 60011.13 miles

1251 California Ave Ste 600
Pittsburg, CA 94565

3774 Railroad Ave Ste C11.92 miles

3774 Railroad Ave Ste C
Pittsburg, CA 94565

1901 Railroad Ave Ste B12.13 miles

1901 Railroad Ave Ste B
Pittsburg, CA 94565

1001 Pittsburg Antioch Hwy Ste B12.81 miles

1001 Pittsburg Antioch Hwy Ste B
Pittsburg, CA 94565

5167 Clayton Rd Ste H14.84 miles

5167 Clayton Rd Ste H
Concord, CA 94521

3000 Las Positas Rd16.21 miles

3000 Las Positas Rd
Livermore, CA 94551

2 Terminal17.59 miles

2 Terminal
San Francisco, CA 94128

2160 W Grant Line Rd Ste 23017.95 miles

2160 W Grant Line Rd Ste 230
Tracy, CA 95377

5601 Norris Canyon Rd Ste 14018.02 miles

5601 Norris Canyon Rd Ste 140
San Ramon, CA 94583

6001 Norris Canyon Rd Ste 14218.02 miles

6001 Norris Canyon Rd Ste 142
San Ramon, CA 94583

5570 Stockton Loop18.04 miles

5570 Stockton Loop
Livermore, CA 94550

1111 E Stanley Blvd18.08 miles

1111 E Stanley Blvd
Livermore, CA 94550

1133 E Stanley Blvd Ste 15118.09 miles

1133 E Stanley Blvd Ste 151
Livermore, CA 94550

2301 Camino Ramon Ste 10818.24 miles

2301 Camino Ramon Ste 108
San Ramon, CA 94583

4000 Dublin Blvd Ste 15018.26 miles

4000 Dublin Blvd Ste 150
Dublin, CA 94568

320 Lennon Ln Fl 218.27 miles

320 Lennon Ln Fl 2
Walnut Creek, CA 94598

2477 Pacheco St18.57 miles

2477 Pacheco St
Concord, CA 94520

2425 East Street, Suite 618.78 miles

2425 East Street, Suite 6
Concord, CA 94520

2540 East St18.80 miles

2540 East St
Concord, CA 94520

108 La Casa Via, Ste 10519.02 miles

108 La Casa Via, Ste 105
Walnut Creek, CA 94598

10200 Trinity Pkwy19.35 miles

10200 Trinity Pkwy
Stockton, CA 95219

2090 Commerce Ave19.37 miles

2090 Commerce Ave
Concord, CA 94520

644 W 12th St19.38 miles

644 W 12th St
Tracy, CA 95376

3128 Santa Rita Rd19.42 miles

3128 Santa Rita Rd
Pleasanton, CA 94566

2231 Galaxy Ct19.43 miles

2231 Galaxy Ct
Concord, CA 94520

632 West 11th Street, Suite 11519.49 miles

632 West 11th Street, Suite 115
Tracy, CA 95376

2224 Delucchi Dr19.58 miles

2224 Delucchi Dr
Pleasanton, CA 94588

2324 Santa Rita Rd Ste 419.85 miles

2324 Santa Rita Rd Ste 4
Pleasanton, CA 94566

3200 Busch Rd19.92 miles

3200 Busch Rd
Pleasanton, CA 94566

1425 S Main St19.95 miles

1425 S Main St
Walnut Creek, CA 94596

5635 W Las Positas Blvd19.97 miles

5635 W Las Positas Blvd
Pleasanton, CA 94588

2291 W March Lane, Suite 145 F20.01 miles

2291 W March Lane, Suite 145 F
Stockton, CA 95207

Drug Testing Near Me

Are you in search of reliable drug testing services nearby? Look no further than Accredited Drug Testing, Inc., recognized nationwide for exceptional drug and alcohol testing services across more than 20,000 locations including Brentwood, CA. Whether it's a DOT-compliant test, legal adjudication, pre-hire screening, or personal analysis, organizing your testing is both straightforward and discreet. Our certified collection centers and labs guarantee precise and trustworthy results that adhere to all legal standards. Contact us using our hotline (800) 221-4291 or book online anytime to locate a drug testing site convenient for you. When reliability and compliance are critical, rely on Accredited Drug Testing where consistent, timely results are our commitment.

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 Brentwood, CA and nationwide, urine drug testing stands as the preferred assessment strategy, particularly for DOT-regulated screenings under 49 CFR Part 40. This procedure detects recent substance use by evaluating a urine sample for drugs, metabolites, or alcohol indicators. The process is meticulously standardized, ensuring confidentiality and delivering results that withstand legal scrutiny, serving requirements of employers, individuals, and judicial directives.

Testing Methods & Collection Process

1. Donor Identity Verification

The individual must present valid government-issued identification and fill out the necessary chain-of-custody paperwork before testing commences.

2. Secure Collection Environment

Urine samples are gathered in a closely monitored restroom setting, tailored to avert interference. Personal belongings may be limited, and measures like securing water sources and dyeing toilet water are implemented to boost security.

3. Chain of Custody Documentation

A federally recognized Chain of Custody Form (CCF) meticulously records the sample from its collection through to lab analysis, safeguarding its integrity and legal validity.

4. Temperature & Validity Checks

Immediately upon collection, the specimen's temperature and appearance are assessed. The laboratory further conducts validity tests, examining parameters such as creatinine, pH, specific gravity, and screening for adulterants.

5. DOT Split Specimen

For DOT screenings, the urine sample is divided into two vials: Bottle A for initial analysis and Bottle B for retesting in cases of disputed results. Single vial collection suffices for non-DOT testing.

6. Laboratory Screening & Confirmation

Samples undergo rigorous screening in SAMHSA-certified labs following a dual-phase methodology:

  • Initial Immunoassay Screen: Identifies broad drug categories.
  • Confirmation Testing: Employing GC/MS or LC/MS for precise detection of drugs or metabolites.

7. MRO Verification

A licensed Medical Review Officer carefully examines any non-negative results, ensures accuracy, and consults with donors regarding possible medical justifications before finalizing results.

How Long Do Urine Test Results Take?

  • Instant Urine Test: Prompt negative results; positive samples forwarded for further verification (24-72 hours).
  • Lab-Based Urine Test: Generally, 24-48 hours for most negatives.
  • DOT Drug Test: 1-3 business days subject to MRO review and donor interactions.
  • Urine EtG Alcohol Test: Expected turnaround is 24-48 hours.

Extra time may be necessary for shy bladder conditions, invalid samples, or if lab confirmation or donor discussion is warranted.

Benefits of Urine Drug & Alcohol Testing

  • Currently the sole DOT sanctioned and federally acknowledged option for regulated testing.
  • Effective for detecting recent usage, suitable for workplaces and incidents post-accidents.
  • Low cost with rapid response time.
  • Widely recognized by judiciary systems, employers, and governmental bodies.
  • Rapid testing alternatives accessible for immediate results.
  • Exceptionally accurate with technological aids like GC/MS or LC/MS for confirmation.

Limitations of Urine Drug & Alcohol Testing

  • Shorter detection span (1-7 days for most substances).
  • Risk of tampering absent robust security practices.
  • Cannot detail long-term or historical consumption trends.
  • Necessitates restroom access and particular collection protocols.
  • Standard urine assessments do not reveal alcohol presence unless EtG/EtS assays are involved.

Despite these limitations, urine testing persists as the most viable and widespread form for substance and alcohol examinations across the country.

How Hair Drug Testing Works

When looking to understand an individual's prolonged substance use, hair testing emerges as a promising alternative. By decoding the deep-seated drug metabolites within hair fibers, this method reveals a 90-day timeline of usage, as opposed to merely recent consumption captured by urine tests. This reliability makes it highly regarded in Brentwood, CA for applications such as workplace monitoring, legal disputes, custody evaluations, and other scenarios necessitating historical data on substance use.

Testing Methods & Collection Process

1. Verification of Donor Identity

To initiate the process, donors supply a valid government-issued ID, and comprehensive consent along with the chain-of-custody documentation is ensured, supporting certification and authenticity.

2. Hair Sample Collection

An adept technician collects 100-120 strands of hair close to the scalp area, preferably from the crown. In cases where head hair is unavailable, body hair serves as a suitable substitute. The method, conducted under scrutiny, is both swift and painless.

3. Chain of Custody Documentation

The Hair Drug Test Custody and Control Form is employed to meticulously record every stage from collection to lab analysis ensuring interpretations are bulletproof for legal contexts.

4. Laboratory Preparation & Analysis

At the lab, the specimen navigates a series of forensic examinations:

  • Decontamination: The hair is systematically cleansed to exclude external pollutants like smoke.
  • Segmentation: The hair is either diced or ground to optimize metabolite extraction.
  • Extraction: Chemical processes remove drug metabolites embedded within hair.

Advanced laboratory tests follow, examining hair samples through:

  • Initial Screening: Detecting drug categories via immunoassay.
  • Confirmation Testing: GC/MS or LC/MS is applied for verifying specific substances and their metabolites with pinpoint accuracy.

5. Metabolite Detection

The intrinsic growth and structure of hair capture drug markers, providing hard-to-manipulate evidence of past substance consumption.

6. MRO Evaluation

Upon detection of non-negative results, a qualified Medical Review Officer authenticates and discusses potential medical interpretations before issuing an ultimate report.

Result Completion for Hair Tests

  • Standard Hair Analysis: Results follow 2-3 business days after labs receive samples.
  • Complex or Alcohol Panels (EtG/FAEE): These conclusions typically take 3-5 business days, influenced by panel complexity.

The intricate nature of hair testing extends analysis periods compared to urine screenings, yet yields unparalleled accuracy and detection constancy.

Benefits of Hair Drug & Alcohol Screening

  • Extensive 90-day window allows for historical insight into substance usage.
  • High resistance to tampering or fraudulent alterations.
  • Depicts patterns reflective of habitual or sporadic use, or recent sobriety.
  • Optimal for legal inquiries, child custody assessments, and mandatory compliance checks.
  • Non-invasive, straightforward acquisition process.
  • Further validation achieved via GC/MS or LC/MS precision testing.

Limitations of Hair Drug & Alcohol Testing

  • Ineffective in recognizing recent ingestion (first 5-7 days).
  • Greater expense when contrasted with urine or saliva tests.
  • Body hair cannot pinpoint exact timing.
  • Substance incorporation may differ according to hair type or growth.
  • Not sanctioned for DOT-imposed criteria.

Despite these hurdles, hair analysis continues to champion accuracy in long-term use detection, frequently employed by corporates, the legal sector, and conscientious individuals beyond Brentwood, CA.

Alcohol & Drug Testing-How Each Method Works

At Accredited Drug Testing, our provision of comprehensive alcohol and drug screening solutions is unmatched, each meticulously crafted to satisfy needs for employers, DOT standards, legal prerequisites, and private testing across Brentwood, CA and the whole nation. Understanding the functional dynamics of each screening type guarantees optimal choice, accurate outcomes, and adherence to both federal and local regulations. Our broad network, certified labs, and skilled Medical Review Officers uphold the necessary precision, dependability, and professionalism essential for reliable testing results.

Alcohol Urine Drug Test

An alcohol urine test identifies recent alcohol intake by tracing ethanol byproducts in urine samples and is regularly employed in workplaces, legal orders, and post-incident settings. Though it doesn't determine present intoxication, it offers a prompt, cost-efficient detection timeframe over a few hours, making it ideal for swift screenings.

ETG Alcohol Test (Urine)

The EtG (Ethyl Glucuronide) urine test exhibits utmost sensitivity, able to observe alcohol use up to 80 hours post-consumption. Given its association with the ethanol metabolite, courts, rehabilitation camps, and compliance overseers, prefer this method for its extended detection range compared to typical urine tests, renowned for accuracy and dependability.

Breath Alcohol Test

A breath alcohol test examines current impairment by capturing alcohol concentration in deep lung air. These tests employ DOT-sanctioned breath analyzers (EBTs) for immediate, defensible results. Breath testing is obligatory for DOT-regulated employees, frequently applied in workplaces, post-accident evaluations, and reasonable suspicion situations.

Blood Alcohol Test

A blood alcohol test accurately gauges the ethanol content in the bloodstream and is lauded for its precision, frequently relied upon by medical facilities, law enforcement, and legal professionals especially critical in DUI scenarios, emergency response, and high-stakes legal inquiries.

PEth Alcohol Blood Test

The PEth (Phosphatidylethanol) blood test pinpoints lasting or intense alcohol consumption by isolating alcohol-indicative biomarkers inside red blood cells. With the ability to detect activity up to weeks later, PEth is considered a central factor to confirm sustained drinking behavior, utilized in family law, monitoring, recovery centers, and safety-critical employment screenings.

ETG Alcohol Test (Hair)

The EtG hair alcohol test enjoys a 90-day detection reach, by dissecting alcohol metabolites embedded inside the hair cuticle. It traces repeated or ongoing alcohol usage rather than transient consumption. Judicial systems, custody battles, and extensive observation programs appreciate hair EtG testing for its consistency, accuracy, and resistant properties to feigned short-term abstinence.

Through expert advice, profitable, certified laboratories, and rapid scheduling, Accredited Drug Testing ensures every alcohol screening method delivers defensible, coherent, and regulation-abiding results, supporting individuals and employers in maintaining security, assurance, and comprehensive statutory conformity.


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

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

Fast,easy and efficient

Fast,easy and efficient. They made the whole process stress free and simple. Thanks 😊

Micheal Ankenbrandt - 2/19/2025

Pretty Straightforward

It was a pretty straightforward process getting an appointment and making payment. Getting to the testing site was quick. I was in and out in no time.

Sadiat Ogunyemi - 12/19/2024

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

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


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(800) 221-4291