Drug & Alcohol Testing Near Me - Walnut Creek, 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

29 Drug-Testing Centers in Walnut Creek

Minutes Away, Test Today

1981 N Broadway Ste 1900.18 miles

1981 N Broadway Ste 190
Walnut Creek, CA 94596

1425 S Main St1.01 miles

1425 S Main St
Walnut Creek, CA 94596

108 La Casa Via, Ste 1051.21 miles

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

320 Lennon Ln Fl 22.42 miles

320 Lennon Ln Fl 2
Walnut Creek, CA 94598

401 Gregory Ln, Ste 1462.99 miles

401 Gregory Ln, Ste 146
Pleasant Hill, CA 94523

609 Gregory Ln Ste 1003.01 miles

609 Gregory Ln Ste 100
Pleasant Hill, CA 94523

2090 Commerce Ave4.85 miles

2090 Commerce Ave
Concord, CA 94520

2280 Diamond Blvd Ste 5204.95 miles

2280 Diamond Blvd Ste 520
Concord, CA 94520

2231 Galaxy Ct4.96 miles

2231 Galaxy Ct
Concord, CA 94520

2477 Pacheco St5.46 miles

2477 Pacheco St
Concord, CA 94520

2425 East Street, Suite 65.52 miles

2425 East Street, Suite 6
Concord, CA 94520

2540 East St5.58 miles

2540 East St
Concord, CA 94520

1805 Arnold Dr6.23 miles

1805 Arnold Dr
Martinez, CA 94553

5167 Clayton Rd Ste H6.35 miles

5167 Clayton Rd Ste H
Concord, CA 94521

827 Arnold Dr Ste 706.86 miles

827 Arnold Dr Ste 70
Martinez, CA 94553

200 Muir Rd Hacienda Bldg, 1st Floor7.19 miles

200 Muir Rd Hacienda Bldg, 1st Floor
Martinez, CA 94553

3237 Alhambra Ave Ste 27.49 miles

3237 Alhambra Ave Ste 2
Martinez, CA 94553

2301 Camino Ramon Ste 10810.49 miles

2301 Camino Ramon Ste 108
San Ramon, CA 94583

5601 Norris Canyon Rd Ste 14010.58 miles

5601 Norris Canyon Rd Ste 140
San Ramon, CA 94583

6001 Norris Canyon Rd Ste 14210.58 miles

6001 Norris Canyon Rd Ste 142
San Ramon, CA 94583

2450 Ashby Ave11.06 miles

2450 Ashby Ave
Berkeley, CA 94705

4749 Surrey Ln11.19 miles

4749 Surrey Ln
El Sobrante, CA 94803

1517 Grand Ave11.29 miles

1517 Grand Ave
Piedmont, CA 94611

1001 Pittsburg Antioch Hwy Ste B11.43 miles

1001 Pittsburg Antioch Hwy Ste B
Pittsburg, CA 94565

3774 Railroad Ave Ste C11.55 miles

3774 Railroad Ave Ste C
Pittsburg, CA 94565

4069 Piedmont Ave Ste 91011.65 miles

4069 Piedmont Ave Ste 910
Oakland, CA 94611

3701 Broadway Fl 511.98 miles

3701 Broadway Fl 5
Oakland, CA 94611

3300 Webster St, Ste 111012.24 miles

3300 Webster St, Ste 1110
Oakland, CA 94609

350 Hawthorne Ave12.31 miles

350 Hawthorne Ave
Oakland, CA 94609

Drug Testing Near Me

Searching for drug testing facilities nearby in Walnut Creek, CA?

Accredited Drug Testing, Inc. is a leading authority in providing prompt and efficient drug and alcohol testing services across more than 20,000 locations nationwide. Catering to the needs for DOT-regulated tests, court-ordered screenings, pre-employment evaluations, or personal assessments, our services are designed to be seamless, secure, and private. We use certified collection sites and labs to ensure that results are accurate, reliable, and comply with both federal and state regulations. You can easily contact us by calling (800) 221-4291 or register online anytime to locate a convenient drug testing center near you. When health, compliance, and peace of mind are paramount, Accredited Drug Testing offers dependable results on 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

Understanding Urine Drug Testing in Walnut Creek, CA

Urine drug testing stands as the foremost screening approach within the United States, mandated as the sole method approved for DOT-regulated drug testing according to 49 CFR Part 40 guidelines. By evaluating a urine sample for drugs, their metabolites, and alcohol biomarkers, this technique effectively identifies recent substance use. This standardized process is renowned for its confidentiality, offering precise, legally viable outcomes suitable for employers, individuals, and judicial programs.

Testing Procedures & Collection Protocols

Time Frame for Urine Test Results

Extra time might be necessitated for circumstances like shy bladders, invalid specimens, additional confirmations, or prolonged donor contact.

Advantages and Limitations

Urine testing, due to inherent advantages, remains the most feasible and extensively utilized drug and alcohol screening strategy not only in Walnut Creek, CA but nationwide.

How Hair Drug Testing Works

Hair drug and alcohol testing is esteemed for its capacity to depict substance use over the long haul. Unlike urine tests, which cover recent substance absorption, hair tests offer a 90-day detection timeframe by examining embedded metabolites within the hair shaft. This makes hair analysis especially suitable for workplaces, judicial instances, child custody, and any scenario necessitating a prolonged assessment of an individual's substance history.

Testing Methods & Collection Process

1. Donor Identity Verification

Prior to collection, donors present a valid ID, verifying their identity and completing chain-of-custody protocols to maintain proper documentation in Walnut Creek, CA.

2. Hair Collection Procedure

A trained collector retrieves a small hair sample, typically 100-120 strands, cut near the scalp for accuracy. In the absence of head hair, body hair may be used. The method is efficient, pain-free, and observed directly to ensure integrity.

3. Chain of Custody Documentation

A Hair Drug Test Custody and Control Form completes the documentation, guaranteeing result reliability and legal defensibility.

4. Laboratory Preparation & Analysis

The lab prepares hair through these steps:

  • Decontamination: Hair is washed to eliminate external contaminants.
  • Cutting/Grinding: Hair is sectioned or ground for substrate preparation.
  • Extraction: Metabolites are chemically extracted from the hair matrix.

The hair undergoes sensitive laboratory procedures:

  • Initial Screening: Immunoassay screens identify drug classes.
  • Confirmation Testing: GC/MS or LC/MS corroborates specific drug traces.

5. Metabolite Detection

Drug metabolites trapped in the evolving hair offer an enduring record of usage. Due to internal incorporation, hair testing is challenging to adulterate.

6. MRO Review

Results are reviewed by a certified Medical Review Officer to verify accuracy, consider medical clarifications, and provide a final outcome.

How Long Do Hair Test Results Take?

  • Standard Hair Test: 2-3 business days post-lab receipt.
  • Complex Panels or Alcohol Testing (EtG/FAEE): 3-5 business days, subject to panel specifics.

As hair testing requires comprehensive lab work, its turnaround exceeds that of urine tests, but its results remain consistently dependable.

Benefits of Hair Drug & Alcohol Testing

  • A 90-day window for extensive substance use detection.
  • Incredibly hard to falsify.
  • Reveals usage consistency or sporadic patterns.
  • Favored for legal, custody, or compliance programs.
  • Non-invasive collection process.
  • Unmatched accuracy from GC/MS or LC/MS confirmation.

Limitations of Hair Drug & Alcohol Testing

  • Poor detection for recent drug intake (5-7 day latency).
  • Greater costs than urine/oral fluid testing.
  • Timing limitations with body hair.
  • Substantial substances incorporate variably by hair type.
  • Not sanctioned for DOT purposes.

Notwithstanding possible limitations, hair testing continues as a crucial strategy for prolonged drug use identification employed in Walnut Creek, CA.

Alcohol & Drug Testing-How Each Method Works

Accredited Drug Testing presents a diverse array of testing services tailored to meet the varied demands of employers, legal entities, and individuals, including throughout Walnut Creek, CA. Our methodical approach aids in understanding each test's applicability, thereby ensuring prudent choice, rigorous results, and adherence to both regional and federal compliance criteria. Our network reaches nationwide, managed by accredited laboratories and guided by skilled Medical Review Officers. This ensures our testing actions carry the integrity, precision, and dependability our clients expect.

Urine Alcohol Tests

Our ethanol urine analysis is instrumental in spotting recent alcohol usage by identifying specific metabolites. Predominantly utilized in workplaces, legal contexts, and post-accident probes, while it does not gauge present impairment, it offers an efficient snapshot of recent consumption.

Enhanced EtG Urine Analysis

The EtG urine test serves as a sensitive means to detect alcohol consumption up to 80 hours beforehand, providing a longer timeframe than conventional tests. Its high reliability makes it an asset for judicial, rehabilitation, and regulatory bodies.

Breath Testing

A breath alcohol test appraises current intoxication levels using devices sanctioned for DOT-approved operations, yielding instant and valid outcomes. Frequently employed within occupational settings and incident investigations.

Blood Alcohol Analysis

Blood testing for alcohol delivers precise calculations of ethanol levels in the bloodstream, highly regarded among medical and legal avenues, particularly for DUI investigations.

PEth Blood Assessment

Our PEth test sheds light on chronic alcohol habits by detecting specific biomarkers, offering insights over several weeks. This is vital for family legalities, compliance checks, and precautionary employment checks in safety-sensitive sectors.

EtG Hair Screening

The EtG hair test uniquely accounts for extended behavioral patterns over 90 days, positioned against temporary consumption. Critical in legal cases and compliance programs, this methodology affords robust, tamper-resistant analysis.

Accredited Drug Testing, with its enhanced scheduling efficiency, certified labs, and expert backing, assures that every alcohol testing method is executed with clarity, protection, and in full legal alignment. We help our clientele maintain informed and conscientious standards.


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

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

Great experience

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

Jenna Bee - 2/19/2025

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

phone support has been excellent

I have used ADT several times. Their phone support has been excellent, both when putting in the orders and when asking for help to interpret results.

Tee Ess - 12/19/2024

Kind and very helpful

Called around for hours and posted from company to person and got nowhere and had to fight to get a refund die to there miss information, well save time and sanity Acredited is the ONLY place the person was kind and very helpful, said what I needed and Faith the lady I dealt with made it simple and she did above and beyond everything I needed, as I'm going through a devorse this was a great help and made my day 100 stars from me.

Steven Harrison - 12/19/2024


Sources


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(800) 221-4291