Drug & Alcohol Testing Near Me - Hercules, 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

36 Drug-Testing Centers in Hercules

Minutes Away, Test Today

500 Alfred Nobel Drive, Suite 1150.92 miles

500 Alfred Nobel Drive, Suite 115
Hercules, CA 94547

520 6th St1.40 miles

520 6th St
Rodeo, CA 94572

4749 Surrey Ln3.01 miles

4749 Surrey Ln
El Sobrante, CA 94803

2970 Hilltop Mall Rd Ste 2034.39 miles

2970 Hilltop Mall Rd Ste 203
Richmond, CA 94806

2425 Church Ln5.52 miles

2425 Church Ln
San Pablo, CA 94806

2000 Vale Rd5.83 miles

2000 Vale Rd
San Pablo, CA 94806

2042 Columbus Pkwy,6.09 miles

2042 Columbus Pkwy,
Benicia, CA 94510

1100 Rose Dr Ste 1406.27 miles

1100 Rose Dr Ste 140
Benicia, CA 94510

243 Georgia St Ste B6.29 miles

243 Georgia St Ste B
Vallejo, CA 94590

3726 Barrett Ave6.47 miles

3726 Barrett Ave
Richmond, CA 94805

200 Muir Rd Hacienda Bldg, 1st Floor6.82 miles

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

17 Tennessee St6.90 miles

17 Tennessee St
Vallejo, CA 94590

3237 Alhambra Ave Ste 27.02 miles

3237 Alhambra Ave Ste 2
Martinez, CA 94553

120 Broadway Ste 237.11 miles

120 Broadway Ste 23
Richmond, CA 94804

901 Nevin Ave Bldg B Floor 17.46 miles

901 Nevin Ave Bldg B Floor 1
Richmond, CA 94801

827 Arnold Dr Ste 707.90 miles

827 Arnold Dr Ste 70
Martinez, CA 94553

975 Sereno Dr8.22 miles

975 Sereno Dr
Vallejo, CA 94589

300 Hospital Dr8.46 miles

300 Hospital Dr
Vallejo, CA 94589

538 Stone Rd Ste G8.85 miles

538 Stone Rd Ste G
Benicia, CA 94510

1805 Arnold Dr8.88 miles

1805 Arnold Dr
Martinez, CA 94553

2505 Bataan St Ste O9.54 miles

2505 Bataan St Ste O
Oakland, CA 94607

2450 Ashby Ave10.61 miles

2450 Ashby Ave
Berkeley, CA 94705

609 Gregory Ln Ste 10010.67 miles

609 Gregory Ln Ste 100
Pleasant Hill, CA 94523

2850 7th St Ste 10010.89 miles

2850 7th St Ste 100
Berkeley, CA 94710

401 Gregory Ln, Ste 14610.99 miles

401 Gregory Ln, Ste 146
Pleasant Hill, CA 94523

2280 Diamond Blvd Ste 52011.07 miles

2280 Diamond Blvd Ste 520
Concord, CA 94520

2231 Galaxy Ct11.77 miles

2231 Galaxy Ct
Concord, CA 94520

2090 Commerce Ave11.84 miles

2090 Commerce Ave
Concord, CA 94520

6001 Shellmound St Ste 85011.92 miles

6001 Shellmound St Ste 850
Emeryville, CA 94608

2540 East St12.40 miles

2540 East St
Concord, CA 94520

2425 East Street, Suite 612.43 miles

2425 East Street, Suite 6
Concord, CA 94520

2477 Pacheco St12.63 miles

2477 Pacheco St
Concord, CA 94520

4069 Piedmont Ave Ste 91012.70 miles

4069 Piedmont Ave Ste 910
Oakland, CA 94611

3701 Broadway Fl 512.80 miles

3701 Broadway Fl 5
Oakland, CA 94611

1517 Grand Ave12.91 miles

1517 Grand Ave
Piedmont, CA 94611

1981 N Broadway Ste 19012.96 miles

1981 N Broadway Ste 190
Walnut Creek, CA 94596

Drug Testing Near Me

Are you searching for reliable drug testing facilities nearby? Accredited Drug Testing, Inc. stands as a reputable authority in providing same-day drug and alcohol screenings across the country, with more than 20,000 locations available. No matter if you require a DOT-compliant test, a court-mandated evaluation, a pre-employment screening, or a personal examination, our process of scheduling is seamless, discreet, and straightforward. We are committed to delivering accurate and reliable outcomes through our certified collection sites and laboratories that adhere to federal and state standards. Just dial (800) 221-4291 or book online around the clock to locate a nearby drug testing facility. Choosing Accredited Drug Testing guarantees you timely and dependable results, prioritizing safety, adherence, and assurance at all times.

If you're located in Hercules, CA, rest assured that our services extend to your state, meeting the specific regulatory requirements and ensuring the utmost compliance and accuracy.

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

Urine Testing Procedures in Hercules, CA

In Hercules, CA, urine drug testing stands as the prevalent choice for substance screening due to its credibility and quick turnaround. This screening type, specifically sanctioned for DOT-regulated tests under 49 CFR Part 40, discerns recent substance intake through the analysis of a urine sample for drugs or alcohol markers. The process is constructed to be standardized and secure, yielding accurate and legally-defensible results for a multitude of purposes.

Testing Protocols and Collection Process

1. Donor Verification

The procedure commences with donors presenting a valid government ID, followed by completing chain-of-custody signatures to guarantee identity confirmation before testing.

2. Secure Collection Environment

The sample collection takes place in a monitored environment to deter tampering, with restraints on personal belongings and dyed toilet water as standard safety measures.

3. Chain of Custody

The Chain of Custody Form (CCF) ensures the sample maintains integrity from collection through lab analysis.

4. Temperature and Validity Checks

Instantly post-collection, the sample's temperature and appearance are assessed. Comprehensive validity examinations check creatinine levels, pH, specific gravity, and foreign substances.

5. DOT Split Specimen

DOT tests are distinguished by splitting samples into two vials for possible future retesting. For non-DOT samples, a single vial suffices.

6. Laboratory Analysis

SAMHSA-certified labs conduct a dual-phase test: an initial immunoassay screen locating drug categories, followed by precise confirmation using GC/MS or LC/MS for explicit identification.

7. Medical Review Officer Verification

A certified MRO assesses and validates any non-negative findings, engaging with the donor regarding potential medical reasons before authorizing the final result.

Urine Test Result Timeline

Shy bladder or invalid cases may necessitate extra processing time if additional confirmation or donor contact is unavoidable.

Advantages of Urine Drug & Alcohol Testing

Notwithstanding its restrictions, urine testing leads as the preferable and frequent method for substance screening nationwide.

How Hair Drug Testing Works

Hair drug and alcohol examinations serve as an exceptionally reliable technique for chronic substance use assessment. In contrast to urine tests looking at recent use, hair analysis offers a 90-day detection period, uncovering drug metabolites embedded within the hair shaft, ideal for workplaces, legal cases, and custody disputes, particularly in Hercules, CA.

Testing Methods & Collection Process

  • Identity Verification: Before collection, donors furnish a government-issued ID, completing all essential consent and chain-of-custody signatures.
  • Collection Procedure: Collectors extract a small sample, usually 100-120 hairs, cut at the scalp. Body hair serves as an alternative if scalp hair isn't available. The process is fast, painless, and supervised.
  • Chain of Custody: A Custody and Control Form ensures the specimen's integrity during its collection, sealing, and testing phases.
  • In-depth Laboratory Analysis: The sample undergoes decontamination, is cut or ground, and metabolites are extracted. This is followed by immunoassay screening and GC/MS or LC/MS confirmatory testing.
  • Stable Metabolite Detection: Encapsulated metabolites inside hair strands provide an established record of substance use, making adulteration efforts futile.
  • MRO Review: Verifies results accuracy and confirms non-negatives, providing potential explanations.

Processing Times for Hair Analysis:

  • Standard Hair Test: Generally 2-3 business days upon lab receipt.
  • Extended Panels or Alcohol Testing (EtG/FAEE): Typically 3-5 business days.

Despite longer processes compared to urine testing, hair analysis ensures comprehensive detection consistency.

Advantages of Hair Drug & Alcohol Testing

Limitations of Hair Testing:

Yet, its widespread acceptance among employers, legal experts, and individuals highlights hair testing's effectiveness in recognizing prolonged substance use in Hercules, CA.

Alcohol & Drug Testing-How Each Method Works

Situated in Hercules, CA and beyond, Accredited Drug Testing offers an extensive array of alcohol and drug testing options to suit a diverse range of requirements, encompassing employers, the Department of Transportation (DOT), legal mandates, and personal interests. Selecting the suitable testing approach ensures the precision, reliability, and compliance with state and federal regulations that are critical for securing valid outcomes. Our expansive network, certified labs, and experienced Medical Review Officers emphasize the professionalism and accuracy necessary for dependable test results.

Alcohol Urine Drug Test

The alcohol urine test efficiently determines recent alcohol intake by detecting ethanol metabolites in urine samples. Primarily utilized for employment screenings, legal compliance, and post-incident evaluations, it offers a brief detection window that accurately pinpoints alcohol consumption over several hours, presenting an affordable and swift assessment method.

ETG Alcohol Test (Urine)

The EtG (Ethyl Glucuronide) urine test stands out for its sensitivity, detecting alcohol consumption up to 80 hours post-intake, making it a favored choice among legal bodies, rehabilitation centers, and compliance organizations. By offering an extended detection period, this method ensures precise outcomes and is renowned for its reliability.

Breath Alcohol Test

A breath alcohol test assesses immediate impairment by measuring alcohol concentration in exhaled air extracted from deep lung regions. Conducted with DOT-approved instruments, these tests provide immediate and legally sound results, essential for DOT-regulated employees and commonly used in employment settings, incident response, and suspicions of substance use scenarios.

Blood Alcohol Test

The blood alcohol test offers a direct measure of alcohol present in the bloodstream, confirming it as a primary choice for inferring impairment. Renowned for its accuracy, it is relied upon by medical centers, law enforcement, and legal agencies seeking insights for DUI investigations, urgent care needs, or critical legal inquiries.

PEth Alcohol Blood Test

Focused on assessing prolonged alcohol consumption, the PEth (Phosphatidylethanol) blood test identifies unique biomarkers associated with alcohol within red blood cells. Ideal for detecting usage over 2-3 weeks, it is acclaimed as a premier indicator of extended drinking patterns and used widely in family law, monitoring systems, treatment programs, and pre-employment checks for roles demanding high safety standards.

ETG Alcohol Test (Hair)

The EtG hair alcohol test delivers a 90-day perspective on alcohol use by scrutinizing metabolites integrated into the hair strands. This approach reveals habitual, chronic consumption patterns rather than singular instances, establishing its reliance among judicial proceedings, child safety evaluations, and prolonged monitoring instructions for authentic, tamper-proof findings.

With specialized assistance, certified national laboratories, and expedient scheduling, Accredited Drug Testing guarantees every alcohol testing option achieves clear, compliant, and defensible results, empowering both individuals and organizations in safeguarding their safety, security, and regulatory adherence.


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

Fantastic Experience

Fantastic experience from the beginning. Jocelyn was very helpful to me as someone who doesn’t have much experience in needing a test. They were very helpful and walked me through the entire process start to finish. Thank you ADT!

Riley Wilson - 2/18/2025

Quick, knowledgeable and courteous

Quick, knowledgeable and courteous Janelle worked diligently to support me. I am recommending their services to anyone looking.

Greensboro Joseph - 11/19/2024

Extremely pleasant

Initially Torrie helped me but I needed to call back. When I called back Kayla stepped in and finished my order. Both were extremely pleasant over the phone and provided wonderful customer service. Kudos to them!

Brynne Beverly - 4/19/2024

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

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


Sources


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(800) 221-4291