Drug & Alcohol Testing Near Me - San Marcos, 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 San Marcos

Minutes Away, Test Today

120 Craven Rd Ste 1011.09 miles

120 Craven Rd Ste 101
San Marcos, CA 92078

400 Craven Rd1.13 miles

400 Craven Rd
San Marcos, CA 92078

1595 Grand Ave Ste 1091.87 miles

1595 Grand Ave Ste 109
San Marcos, CA 92078

577 S Rancho Santa Fe Rd Ste 102 Ste 1022.35 miles

577 S Rancho Santa Fe Rd Ste 102 Ste 102
San Marcos, CA 92078

740 Nordahl Rd Ste 1312.71 miles

740 Nordahl Rd Ste 131
San Marcos, CA 92069

902 Sycamore Ave Ste 201,3.31 miles

902 Sycamore Ave Ste 201,
Vista, CA 92081

2185 Citracado Pkwy3.45 miles

2185 Citracado Pkwy
Escondido, CA 92029

860 W Valley Pkwy Ste 1504.51 miles

860 W Valley Pkwy Ste 150
Escondido, CA 92025

958 Postal Way Ste 65.11 miles

958 Postal Way Ste 6
Vista, CA 92083

555 E Valley Pkwy Ste 35.36 miles

555 E Valley Pkwy Ste 3
Escondido, CA 92025

840 Townsite Dr6.05 miles

840 Townsite Dr
Vista, CA 92084

5810 El Camino Real Ste A6.20 miles

5810 El Camino Real Ste A
Carlsbad, CA 92008

3257 Camino De Los Coches Ste,6.29 miles

3257 Camino De Los Coches Ste,
Carlsbad, CA 92009

1855 Lotus Ct6.83 miles

1855 Lotus Ct
Carlsbad, CA 92011

130 Cedar Rd Ste 2007.46 miles

130 Cedar Rd Ste 200
Vista, CA 92083

2000 Westwood Rd7.51 miles

2000 Westwood Rd
Vista, CA 92083

4171 Oceanside Blvd Ste 1097.88 miles

4171 Oceanside Blvd Ste 109
Oceanside, CA 92056

4002 Vista Way8.05 miles

4002 Vista Way
Oceanside, CA 92056

3910 Vista Way Ste 1068.15 miles

3910 Vista Way Ste 106
Oceanside, CA 92056

16950 Via Tazon9.50 miles

16950 Via Tazon
San Diego, CA 92127

2122 S El Camino Real Ste 1009.90 miles

2122 S El Camino Real Ste 100
Oceanside, CA 92054

354 Santa Fe Dr10.10 miles

354 Santa Fe Dr
Encinitas, CA 92024

351 Santa Fe Dr Ste 21010.13 miles

351 Santa Fe Dr Ste 210
Encinitas, CA 92024

2804 Roosevelt St10.68 miles

2804 Roosevelt St
Carlsbad, CA 92008

585 Arthur Ave11.00 miles

585 Arthur Ave
Oceanside, CA 92057

11895 Avenue Of Industry11.80 miles

11895 Avenue Of Industry
San Diego, CA 92128

15615 Pomerado Rd11.88 miles

15615 Pomerado Rd
Poway, CA 92064

15611 Pomerado Rd11.89 miles

15611 Pomerado Rd
Poway, CA 92064

15611 Pomerado Rd Ste 52511.89 miles

15611 Pomerado Rd Ste 525
Poway, CA 92064

1430 Division St12.25 miles

1430 Division St
Vista, CA 92081

10605 Scripps Poway Pkwy Ste C14.76 miles

10605 Scripps Poway Pkwy Ste C
San Diego, CA 92131

Po Box 279815.73 miles

Po Box 2798
Fallbrook, CA 92088

10737 Camino Ruiz Ste 14015.89 miles

10737 Camino Ruiz Ste 140
San Diego, CA 92126

10243 Genetic Center Dr16.42 miles

10243 Genetic Center Dr
San Diego, CA 92121

1116 S Main Ave16.57 miles

1116 S Main Ave
Fallbrook, CA 92028

10350 Barnes Canyon Rd Ste 20016.88 miles

10350 Barnes Canyon Rd Ste 200
San Diego, CA 92121

Drug Testing Near Me

Searching for drug testing facilities nearby? Superior choice, Accredited Drug Testing, Inc., offers same-day drug and alcohol testing services, boasting over 20,000 locations across the United States, including San Marcos, CA. Whether you require a DOT-mandated examination, a court-directed screening, a pre-employment drug test, or a test for personal considerations, we provide a quick, discreet scheduling process. Our certified collection sites and labs are committed to delivering precise, trustworthy results, fully aligned with federal and state regulations. Dial (800) 221-4291 or book online anytime to locate a convenient testing center nearby. When relating to safety, compliance, and assurance, Accredited Drug Testing consistently provides reliable results promptly.

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 drug testing remains the most prevalent method across San Marcos, CA and the U.S., being the sole option sanctioned for DOT-regulated drug testing under 49 CFR Part 40. This technique discerns recent drug use by assessing a urine specimen for traces of drugs, metabolites, or alcohol biomarkers. The procedure is uniform, secretive, and built to furnish accurate, legally sound outcomes for businesses, individuals, and judicial mandates.

Testing Methods & Collection Process

1. Donor Identity Verification

The donor provides authorized identification and adheres to chain-of-custody protocols prior to testing commencement.

2. Secure Collection Environment

Samples are gathered in controlled settings preventing tampering, with potential restrictions on personal items and secured facilities.

3. Chain of Custody Documentation

A national Chain of Custody Form (CCF) follows the specimen, upholding the test's integrity and legitimacy.

4. Temperature & Validity Checks

Right after collection, samples undergo temperature and appearance checks, alongside validity assessments in labs, including creatinine and pH evaluations.

5. DOT Split Specimen

DOT tests divide urine into two containers, where non-DOT requires only one for accuracy and possible retesting.

6. Laboratory Screening & Confirmation

Utilizing SAMHSA-certified laboratories for two-phase analysis, employing:

  • Initial Immunoassay Screening: Identifies drug classes.
  • Confirmation Testing: Precision identification of drugs/metabolites using GC/MS or LC/MS.

7. MRO Verification

A Medical Review Officer inspects non-negatives, confirms correctness, and investigates possible medical causes with the applicant.

Duration for Urine Test Outcomes

Additional time may be necessary for shy bladder issues, invalid samples, or needed confirmation and contact.

Advantages of Urine Drug & Alcohol Testing

Despite some limitations, urine testing remains the premier and extensively adopted method for drug and alcohol checks in San Marcos, CA and the rest of the U.S.

How Hair Drug Testing Works

In San Marcos, CA and beyond, hair drug and alcohol testing serves as a highly consistent laboratory method to reveal long-term substance use patterns. Unlike urine testing focused on recent intoxication, hair testing provides a 90-day insight by assessing drug metabolites embedded within the hair strands. This method is especially beneficial for workplace screening, legal inquiries, child custody cases, and any context demanding a comprehensive view of a person's substance use antecedents.

Testing Methods & Collection Process

1. Donor Identity Verification

The process initiates with the donor showing a valid government ID, followed by the completion of consent and chain-of-custody documents to affirm authentic documentation.

2. Hair Collection Procedure

At collection, a trained professional acquires a minor hair sample, typically comprising 100-120 strands near the scalp. Should scalp hair be unavailable, body hair is an alternative. This immediate, painless procedure occurs under direct oversight.

3. Chain of Custody Documentation

Documentation with a Hair Drug Test Custody and Control Form logs the specimen's acquisition, sealing, and transfer to uphold legality and protect the results during testing.

4. Laboratory Preparation & Analysis

Upon reaching the lab, the hair specimen undergoes comprehensive forensic processes, including:

Following extraction, samples undergo detailed lab testing:

5. Metabolite Detection

Metabolites, trapped within the hair as it grows, offer a stable, enduring record of substance use. Given these internal incorporations, falsifying results or cheating is extremely arduous.

6. MRO Review

Certified Medical Review Officers evaluate non-negative outcomes, confirming test accuracy and scrutinizing possible medical explanations before finalizing the conclusive results.

How Long Do Hair Test Results Take?

Hair testing's multi-layered lab process implies a marginally extended turnaround than urine testing, yet ensures unparalleled detection constancy.

Benefits of Hair Drug & Alcohol Testing

  • 90-day detection window for chronic substance insights.
  • Difficult to decept or corrupt results.
  • Exposes steady, erratic, or ceased substance usage patterns.
  • Optimized for judicial, custody, and compliance requirements.
  • Painless, swift collection process.
  • Utilizes GC/MS or LC/MS for accurate confirmations.

Limitations of Hair Drug & Alcohol Testing

  • Fails to detect recent consumption (within days of intake).
  • Reportedly costlier than urine or fluid tests.
  • Body hair offers non-specific timelines.
  • Substance integration varies with hair type and growth rates.
  • Not applicable for DOT regulatory testing.

Regardless of these limitations, hair testing remains a notable method for verifying long-term substance use, leveraged broadly by employers, legal authorities, and individuals seeking credible, tamper-resistant findings.

Alcohol & Drug Testing-How Each Method Works

Accredited Drug Testing offers an array of drug and alcohol screening techniques, crafted to satisfy requirements for workplaces, DOT mandates, legal, and personal contexts. Understanding these methods ensures ideal choice, dependability of results, and adherence to national and Kansan law mandates. Our expansive network, lab certifications, and skilled Medical Review Officers grant the confidence needed for dependable results.

Alcohol Urine Drug Test

Detecting recent alcohol consumption, this test identifies ethanol metabolites in urine and is popular in workplaces, courts, and post-accident protocols. While not indicative of current impairment, it offers a concise detection window.

ETG Alcohol Test (Urine)

The EtG urine test provides highly sensitive insights into alcohol usage up to 80 hours post-consumption. Courts and compliance agencies respect its extended detection period and accuracy over standard urine tests.

Breath Alcohol Test

A breath alcohol test estimates current impairment through DOT-sanctioned breath devices, delivering near-immediate, legal results vital for workplace safety and post-accident scenarios.

Blood Alcohol Test

As a precise measure of ethanol in the bloodstream, this test is a gold standard for assessing impairment, gaining reliance from hospitals, legal agencies, and law enforcement, particularly in DUI cases.

PEth Alcohol Blood Test

The PEth blood test verifies habitual drinking patterns by tracing biomarkers within red blood cells, making it a potent tool for family law and monitoring programs.

ETG Alcohol Test (Hair)

Offering a 90-day window, this test discerns chronic alcohol patterns, forming a strong basis for judicial or custodial evaluations.

Accredited Drug Testing ensures that each screening choice meets expectations through expert direction, certified labs, and prompt scheduling, providing clarity and legal 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

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

Sweet and helpful

Trish was amazing and got me through the sytem very fast and swift. I had a hard time hearing her a couple of times, but she was super sweet and helpful throughout the process. Highly recommend her!

Sophia Schutze - 6/19/2024

Smooth and Seamless

I use their service for new hire and DOT employee's. Spoke with Taisha Walker this morning, and she was very helpful. She made the process smooth and seamless.

Christina Galdos - 3/9/2025

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

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


Sources


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(800) 221-4291