Drug & Alcohol Testing Near Me - Downieville, 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

15 Drug-Testing Centers in Downieville

Minutes Away, Test Today

209 Nevada St0.14 miles

209 Nevada St
Downieville, CA 95936

2090 Nevada City Hwy25.01 miles

2090 Nevada City Hwy
Grass Valley, CA 95945

180 Sierra College Dr25.48 miles

180 Sierra College Dr
Grass Valley, CA 95945

123 Margaret Ln Ste A225.65 miles

123 Margaret Ln Ste A2
Grass Valley, CA 95945

155 Glasson Way25.73 miles

155 Glasson Way
Grass Valley, CA 95945

883 Valley View Dr On-site Only26.53 miles

883 Valley View Dr On-site Only
Quincy, CA 95971

1065 Bucks Lake Rd27.20 miles

1065 Bucks Lake Rd
Quincy, CA 95971

10956 Donner Pass Rd Ste 23037.05 miles

10956 Donner Pass Rd Ste 230
Truckee, CA 96161

12121 Pine Ave37.08 miles

12121 Pine Ave
Truckee, CA 96161

10121 Pine Ave37.11 miles

10121 Pine Ave
Truckee, CA 96161

2451 Oro Dam Blvd E,38.52 miles

2451 Oro Dam Blvd E,
Oroville, CA 95966

1940 Feather River Blvd Ste O39.84 miles

1940 Feather River Blvd Ste O
Oroville, CA 95965

6573 Clark Road, Suite A43.43 miles

6573 Clark Road, Suite A
Paradise, CA 95969

11795 Education St Ste 22044.94 miles

11795 Education St Ste 220
Auburn, CA 95602

3133 Professional Drive, Suite 1645.13 miles

3133 Professional Drive, Suite 16
Auburn, CA 95603

Drug Testing Near Me

If you're in search of drug testing locations near me, then look no further! Accredited Drug Testing, Inc. stands out as a leading, reliable provider of same-day drug and alcohol testing services, administering screenings across a broad network of over 20,000 facilities nationwide, including in Downieville, CA. Whether it's a DOT-compliant test, a court-mandated evaluation, a pre-employment drug screening, or an individual personal test, we ensure a hassle-free, discreet scheduling process. Our certified collection sites and state-of-the-art laboratories deliver precise, compliant results that adhere strictly to both federal and state regulations. For ease of use, simply call (800) 221-4291 or schedule effortlessly online, 24/7, and locate a nearby drug testing center that best suits your needs. When prioritizing safety, regulatory compliance, and peace of mind, Accredited Drug Testing ensures punctual, 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 Downieville, CA 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

Introducing Hair Drug and Alcohol Testing in Downieville, CA

Hair testing emerges as a pivotal approach for long-term substance use detection, providing a comprehensive 90-day window of insight into an individual's drug or alcohol habits by analyzing metabolites lodged within the hair matrix. Ideal for workplaces, legal scenarios, and more, this method offers reliability that surpasses the limitations of shorter-term detection tests like urine sampling.

Thorough Hair Testing Methods and Collection Procedures

While slightly longer due to in-depth processing, hair testing offers accurate and substantial substance use insight unmatched by other methods.

Alcohol & Drug Testing-How Each Method Works

Operating across the United States, including Downieville, CA, Accredited Drug Testing offers comprehensive drug and alcohol screening solutions, meticulously designed to accommodate needs of employers, DOT mandates, legal euphemisms, and individual situations. By comprehending each test type's unique function, clients can ensure impeccable choice, reliable results, and compliance with federal and state protocols. Our sprawling national network, alongside certified labs and adept Medical Review Officers, guarantees the necessary precision, trust, and professionalism for assured testing outcomes.

Alcohol Urine Drug Test

This test method identifies recent alcohol intake through the detection of ethanol metabolites in urine. Predominantly employed for workplace checks, legal requisitions, and post-incident assessments, it doesn't pinpoint current impairment but functions over a short detection period, offering an expedient and budget-friendly screening option.

ETG Alcohol Test (Urine)

The Ethyl Glucuronide (EtG) urine test stands as a sensitive measure detecting alcohol consumption up to 80 hours past intake. As a direct by-product of ethanol, this test finds widespread application across courtrooms, rehab setups, and compliance monitoring nationwide, renowned for its accuracy and extensive detection window beyond traditional methods.

Breath Alcohol Test

Utilizing DOT-sanctioned breath analyzers, the breath alcohol test assesses current impairment via alcohol concentration in deep lung breaths, delivering instant and legally valid results. This modality is essential for DOT-regulated employees, and commonly enacted in workplaces following accidents or under reasoned suspicion.

Blood Alcohol Test

Offering exact ethanol concentration measurements in the bloodstream, this method ranks among the most accurate for assessing impairment. Employed in Downieville, CA's hospitals, law enforcement, and legal institutions, blood alcohol testing is vital in DUI cases, emergency medical responses, and rigorous legal probes.

PEth Alcohol Blood Test

PEth (Phosphatidylethanol) blood testing serves as an identifier of chronic or intensive alcohol consumption through alcohol biomarkers in red blood cells, extending detection for 2-3 weeks. This test holds high relevance in family law, monitoring regimens, treatment environments, and employment screenings in safety-conscious fields.

ETG Alcohol Test (Hair)

With a 90-day detection horizon, the EtG hair alcohol test explores alcohol metabolites embedded in hair, targeting patterns of chronic use rather than isolated consumption episodes. Courts, child custody deliberations, and prolonged monitoring programs employ this method for its durable and precise tracking ability against temporary abstinence efforts.

Through professional support, nationally accredited lab integration, and fast-paced scheduling, Accredited Drug Testing ensures each alcohol screening method accomplishes clear, defensible, and regulation-compliant results, empowering individuals and employers to remain informed and at ease with Downieville, CA's regulatory requirements.


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

ADT is truly the best

Where do I start?!! ADT is truly the best!! I had the pleasure of speaking with Tori today! She was excellent, professional and truly went above and beyond in her kind, compassionate care and commitment to providing me with the best service possible. I was in such a time crunch, but I was able to call, order the test, pay for it over the phone and get the test I needed within the hour. Not only did this put my mind at ease, they saved my job!! I am forever grateful for this team of hard workers, that care, with such great work ethics! Thank you from the very bottom of my heart!!! If you need a drug, alcohol, etc… screening, this team will be your lifesavers!!

Sarah Patterson - 4/8/2025

Super Easy to Schedule

Super easy to schedule and get what you need, weather for a job, personal, or court ordered! I believe I spoke with Justine who was helpful in answering all my questions and stayed on the phone with me until she was sure I was all set and got the emails I needed.

Mandy Ryan - 12/14/2024

Everything was great

Everything was great, the staff was very polite. Thank you.

Olga Petrova - 9/19/2024

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

quick to assist

They are very quick to assist with your orders and they helped when I needed to find a new testing facility.

Gary Matkin - 2/19/2025


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(800) 221-4291