Drug Testing Locations - Yountville, CA

Employment, DOT, Court Ordered, Personal
Urine| Hair Follicle | Oral Fluid | Blood | ETG

40 Drug-Testing Centers in Yountville

Minutes Away, Test Today

3435 Valle Verde Dr Ste B6.24 miles

3435 Valle Verde Dr Ste B
Napa, CA 94558

3285 Claremont Way Fl 26.34 miles

3285 Claremont Way Fl 2
Napa, CA 94558

1000 Trancas St6.42 miles

1000 Trancas St
Napa, CA 94558

3260 Beard Road, Suite A6.52 miles

3260 Beard Road, Suite A
Napa, CA 94558

347 Andrieux St9.66 miles

347 Andrieux St
Sonoma, CA 95476

10 Woodland Rd11.68 miles

10 Woodland Rd
Saint Helena, CA 94574

3900 Lakeville Hwy16.89 miles

3900 Lakeville Hwy
Petaluma, CA 94954

20 Elaine Dr16.91 miles

20 Elaine Dr
Santa Rosa, CA 95409

1550 Professional Drive, Suite B17.73 miles

1550 Professional Drive, Suite B
Petaluma, CA 94954

1370 Medical Center Dr Ste B17.85 miles

1370 Medical Center Dr Ste B
Rohnert Park, CA 94928

400 N Mcdowell Blvd17.95 miles

400 N Mcdowell Blvd
Petaluma, CA 94954

151 Lynch Creek Way18.06 miles

151 Lynch Creek Way
Petaluma, CA 94954

153 Lynch Creek Way18.09 miles

153 Lynch Creek Way
Petaluma, CA 94954

1 Quality Dr18.31 miles

1 Quality Dr
Vacaville, CA 95688

1111 Sonoma Ave Ste 12118.58 miles

1111 Sonoma Ave Ste 121
Santa Rosa, CA 95405

990 Sonoma Ave,18.65 miles

990 Sonoma Ave,
Santa Rosa, CA 95404

1411 Oliver Road, Suite 13018.65 miles

1411 Oliver Road, Suite 130
Fairfield, CA 94534

709 Petaluma Blvd N18.86 miles

709 Petaluma Blvd N
Petaluma, CA 94952

2470 Hilborn Rd Ste 11018.87 miles

2470 Hilborn Rd Ste 110
Fairfield, CA 94534

6174 State Farm Dr19.02 miles

6174 State Farm Dr
Rohnert Park, CA 94928

5900 State Farm Dr19.05 miles

5900 State Farm Dr
Rohnert Park, CA 94928

349 College Ave19.76 miles

349 College Ave
Santa Rosa, CA 95401

300 Hospital Dr19.81 miles

300 Hospital Dr
Vallejo, CA 94589

6025 Labath Ave Ste 10419.84 miles

6025 Labath Ave Ste 104
Rohnert Park, CA 94928

975 Sereno Dr19.85 miles

975 Sereno Dr
Vallejo, CA 94589

200 Butcher Rd20.04 miles

200 Butcher Rd
Vacaville, CA 95687

418 Davis St Ste B20.52 miles

418 Davis St Ste B
Vacaville, CA 95688

1221 N Dutton Ave20.54 miles

1221 N Dutton Ave
Santa Rosa, CA 95401

770 Mason St,20.69 miles

770 Mason St,
Vacaville, CA 95688

770 Mason St20.69 miles

770 Mason St
Vacaville, CA 95688

17 Tennessee St20.84 miles

17 Tennessee St
Vallejo, CA 94590

3975 Old Redwood Hwy Ste 15221.02 miles

3975 Old Redwood Hwy Ste 152
Santa Rosa, CA 95403

243 Georgia St Ste B21.48 miles

243 Georgia St Ste B
Vallejo, CA 94590

1000 Nut Tree Rd22.30 miles

1000 Nut Tree Rd
Vacaville, CA 95687

1287 Fulton Rd22.37 miles

1287 Fulton Rd
Santa Rosa, CA 95401

3650 Westwind Blvd Po Box 568022.42 miles

3650 Westwind Blvd Po Box 5680
Santa Rosa, CA 95403

180 Rowland Way23.57 miles

180 Rowland Way
Novato, CA 94945

1100 Rose Dr Ste 14023.99 miles

1100 Rose Dr Ste 140
Benicia, CA 94510

2042 Columbus Pkwy,24.06 miles

2042 Columbus Pkwy,
Benicia, CA 94510

6800 Palm Avenue, Suite G24.78 miles

6800 Palm Avenue, Suite G
Sebastopol, CA 95472

Employment, DOT, Court Ordered, Probation, Family

Accredited Drug Testing provides a range of drug and alcohol testing services at 40 convenient centers around Yountville, CA. Our offerings include DOT and non-DOT urine drug screenings, breathalyzer alcohol tests, EtG alcohol evaluations, and hair drug analyses, catering to personal, employment, and legal purposes. We provide quick results as well as SAMSA lab-certified testing, with same-day service options available. Many of our Yountville locations are just a short drive from your residence or workplace. Additional offerings include Occupational Health, Clinical Testing, and Background Checks.

Dial (800) 221-4291 or register through our website. Choose your desired test and select an accessible location—testing is open to individuals, companies, or others. Setting up a test is Simple and Efficient; contact our scheduling team or book your test online at any time. Our efficient and intuitive system makes organizing drug tests near Yountville a straightforward task.

* You must register by phone or online to receive your donor pass/registration prior to proceeding to the testing center. You must bring a valid government issued ID along with the registration/barcode number which was sent to you by email.

When you're searching for drug testing near me or drug testing locations, we provide a simple and convenient process to find a drug and alcohol testing location near you that is certified to provide all of your drug and alcohol testing needs.

Yountville, CA Drug Testing

Drug Testing Services Available at Our Yountville, CA Labs:

At our Yountville drug testing collection sites, Accredited Drug Testing provides one of the widest selections of drug and alcohol testing services available. Whether you're an employer, attorney, court, or private individual, we offer both DOT and non-DOT testing options—ranging from rapid tests to comprehensive lab-based screenings—capable of detecting nearly any substance.

Mobile/On-Site Drug Testing

If you're an employer needing to test 25 or more employees and looking to save time and money, we offer mobile on-site drug testing where we come to you. Call us today for more information.

Drug Testing in Yountville, CA

Yountville, California Statistics

Yountville, Napa County saw a 5% increase in drug-related arrests in the last recorded year.

Substance abuse treatment admissions in Yountville, Napa County have risen by 12% over the past two years.

Yountville reports a higher opioid prescription rate than the overall Napa County average.

In Yountville, 18% of high school students reported using illicit drugs in the past year.

Yountville has seen a 7% decrease in drug-related hospitalizations over the last year.

Cannabis-related offenses in Yountville, Napa County make up 35% of all drug-related crimes.

How does the body eliminate Drugs

Drug elimination is the sum of the processes of removing an administered drug from the body. In the pharmacokinetic ADME scheme (absorption, distribution, metabolism, and excretion), it is frequently considered to encompass both metabolism and excretion. Hydrophobic drugs, to be excreted, must undergo metabolic modification making them more polar. Hydrophilic drugs, on the other hand, can undergo excretion directly, without the need for metabolic changes to their molecular structures.

Although many sites of metabolism and excretion exist, the chief organ of metabolism is the liver, while the organ primarily tasked with excretion is the kidney. Any significant dysfunction in either organ can result in the accumulation of the drug or its metabolites in toxic concentrations.

A variety of other factors impact elimination — intrinsic drug properties, such as polarity, size, or pKa. Also other factors include genetic variation among individuals, disease states affecting other organs, and pathways involved in the way the drug distributes through the body, such as first-pass metabolism.

Issues of Concern

Drug elimination is the removal of an administered drug from the body. It is accomplished in two ways, either by excretion of an unmetabolized drug in its intact form or by metabolic biotransformation followed by excretion. While excretion is primarily carried out by the kidneys, other organ systems are involved as well. Similarly, the liver is the primary site of biotransformation, yet extrahepatic metabolism takes place in a variety of organ systems affecting multiple drugs.

Given the multiple organ systems and the variety of metabolic transformations present, drug elimination can entail a significant degree of complexity. Hydrophilic drugs are typically directly excreted by the kidneys, while hydrophobic drugs undergo biotransformation before excretion. The purpose here is twofold – biotransformation serves both detoxify the exogenous substances as well as to increase their hydrophilicity, ensuring their elimination via the kidneys.

Two broad metabolic pathways of hepatic drug transformation exist. Phase I is the direct modification of the target molecule, whereas phase II entails conjugation of the target to a polar molecule of low molecular weight. Phase I prepare the drug to enter phase II, but single-phase metabolism also exists.

Phase I involves oxidation, reduction, and hydrolysis of the exogenous molecule. These reactions are accomplished by hepatic microsomal enzymes, which reside in the smooth endoplasmic reticulum of the hepatocytes. Best known among them is the cytochrome P450 system, whose enzymes are predominantly involved in oxidative metabolism. Within the cytochrome P450 family (CYP), the enzyme responsible for the metabolism of more than 50% of existing drugs is the CYP3A4. Its activity encompasses various classes of medications, including opioids, immunosuppressants, antihistamines, and benzodiazepines. The enzymes can also be induced or inhibited by a variety of substances they interact with, including pharmaceuticals. The increase in metabolic activity with CYP induction results in a diminished activity of drugs targeted by that particular isoform. Conversely, CYP inhibition will result in increased drug plasma concentration, potentially leading toxicity. The CYP3A4 is induced by phenytoin, phenobarbital, and St. John's wort, while diltiazem, erythromycin, and grapefruit inhibit it. Caution is, therefore, necessary when administering CYP3A4-metabolized drugs in the presence of any of the inhibitors or inducers.

Phase II consists of covalent bonding of polar groups to nonpolar molecules to render them water-soluble and allow renal or biliary excretion. Target molecules enter phase II directly or via initial processing through phase I. A variety of polar adjuncts is transferred, including amino acids, glucuronic acid, glutathione, acetate, and sulfate. Glucuronidation is one of the major pathways of phase II biotransformation. The UDP-glucuronosyltransferase (UGT) enzyme family performs this activity. Typically, glucuronide derivatives possess less or no activity of the original drug, but in some cases, pharmacologically active compounds result. Morphine-6-glucuronide is a phase II metabolite of morphine with significant analgesic activity. As with the CYP enzymes, inducers, and inhibitors of phase II, enzymes exist and may influence the efficacy of drugs that rely on conjugation before excretion.

The first-pass effect is a feature of hepatic metabolism that also plays a role in the elimination of multiple drugs. Here, the enteric consumed drugs are exposed directly to the liver via the portal vein, where they undergo biotransformation before entering the systemic circulation. This activity reduces the bioavailability and needs to be factored into the dose administered to the patient. Intravenously administered drugs are not subject to the first-pass effect.

Extrahepatic drug metabolism takes place in the GI tract, kidneys, lungs, plasma, and skin.

Renal excretion completes the process of elimination that begins in the liver. Polar drugs or their metabolites get filtered in the kidneys and typically do not undergo reabsorption. They subsequently get excreted in the urine. Urinary pH has a significant impact on excretion, as drug ionization changes depending on the alkaline or acidic environment. Increased excretion occurs with weakly acidic drugs in basic urine and weakly basic drugs in acidic urine.

Excretion in the bile is another significant form of drug elimination. The liver can actively secrete ionized drugs with a molecular weight greater than 300 g/mol into bile, from where they reach the digestive tract and are either eliminated in feces or reabsorbed as part of the enterohepatic cycle.

Other pathways of excretion include the lungs, breast milk, sweat, saliva, and tears

Employers in Yountville, CA & Drug Testing Policies

As a hub for wine and hospitality, Yountville, CA, enforces stringent drug testing policies among employers. Many local businesses, especially in the hospitality sector, require pre-employment drug screening to ensure a safe working environment. Regular random drug tests are also conducted to maintain compliance and safety standards.

Employers in Napa County generally adhere to California's legal framework for workplace drug testing, ensuring privacy rights and consent are respected. For more information on drug testing in the workplace, refer to California Department of Industrial Relations.

The local business community in Yountville also partners with the California Employers Association to provide training on substance abuse prevention and maintaining a drug-free workplace.

Government Efforts with Drug Problems in Yountville, CA

The town of Yountville, CA, in Napa County, has implemented several initiatives to combat drug abuse. Local authorities, in collaboration with Napa County Health and Human Services (HHS), focus on prevention and education programs targeting young people. Various workshops and seminars are held regularly to educate the community about substance abuse risks and prevention strategies.

On a broader scale, Yountville benefits from state and federal support to address drug-related issues. Initiatives by California Department of Public Health and the Substance Abuse and Mental Health Services Administration (SAMHSA) provide essential resources and funding. For more information, visit California Department of Public Health and SAMHSA.

Local Drug Busts & News in Yountville, CA

Recent drug busts in Yountville, CA, have highlighted the ongoing challenges of controlling illicit drug activity in the region. Law enforcement has made significant strides, seizing substantial quantities of controlled substances, subsequently reducing the local drug supply.

Yountville has also seen community-driven events focused on raising awareness of drug abuse problems. Annual events such as the Napa County Opioid Awareness event provide a platform for dialogue and education on combating substance abuse, bringing together healthcare professionals, law enforcement, and residents.

Occupational Health Services

Accredited Drug Testing offers fast, reliable employment screening services in Yountville, CA. Trusted by employers nationwide for accurate results and exceptional service.

California DOT/Non DOT Physicals

California Vision Tests

California Audiograms

California Respirator Fit Tests

California Lift Tests

California Background Checks

Resources & Citations

Napa Recovery Resource Center

NIAAA Alcohol Treatment

California Healthline

San Jose Narcotics Covert Investigations

Phoenix House California

211 Bay Area

UCLA ISAP

National Institute on Drug Abuse

U.S. Department of Health & Human Services

CDC Drug Overdose

Yountville Drug Testing

Quickly find trusted local drug testing centers in Yountville, CA — fast, convenient, and reliable every time!

Yountville DOT Drug Testing

Quickly find a local DOT drug testing center in Yountville, CA — fast, reliable, convenient nationwide service!

Yountville DNA Testing

DNA testing for legal and non-legal purposes including child support, and child custody around Yountville, CA.

Yountville Industry Training

Including specimen collector training, DER training, reasonable suspicion training and much more in Yountville, CA.v

Yountville Hair Drug Testing

Get fast, accurate hair drug testing at our convenient Yountville, CA locations—results you can trust, every time!

Yountville Alcohol Testing

Fast, reliable alcohol testing to keep your workplace safe and compliant every single day in Yountville, CA.

Yountville Drug Testing Services

Reliable nationwide drug testing services ensuring accuracy, compliance, and quick results for businesses and individuals in Yountville, CA.

Yountville 5 Panel Drug Test

Accurate 5 panel drug testing with fast, confidential results—trusted by Yountville, CA employers and individuals nationwide.

Yountville 10 Panel Drug Test

Comprehensive 10 panel drug testing with fast, reliable results—trusted for Yountville, CA workplace and personal testing needs.

Yountville On Site Drug Testing

Convenient on-site mobile drug testing with fast, reliable results—saving time while keeping your Yountville, CA workplace compliant.

Yountville DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Yountville, CA drivers compliant and on the road with confidence.

DOT Consortium

Join our DOT consortium for hassle-free compliance, random testing management, and reliable driver safety solutions.


Frequently Asked Questions

Yes. Accredited Drug Testing maintains access to numerous collection sites nationwide, so in most cases a testing location is available close to a donor’s home, workplace, or job site. Same-day scheduling is often possible for both drug and alcohol testing needs.
Employers, DOT-regulated companies, attorneys, courts, probation departments, and private individuals all use Accredited Drug Testing locations. You do not need to be part of a large company to request testing — individuals can order testing directly.
Locations support urine drug tests, hair follicle drug tests, saliva/oral fluid drug tests, instant/rapid screening (where permitted), and evidential breath alcohol testing. Post-accident and reasonable suspicion testing are also available.
Yes. Accredited Drug Testing supports DOT-compliant urine drug testing and evidential breath alcohol testing following 49 CFR Part 40 requirements. This includes pre-employment, random, post-accident, reasonable suspicion, return-to-duty, and follow-up testing for safety-sensitive employees.
In many cases, yes. Same-day or next-day appointments can typically be arranged. This is especially important for urgent needs such as post-accident, reasonable suspicion, court deadlines, or probation compliance.
Yes. Results are released only to the authorized recipient — for example, an employer’s designated representative, the court or probation contact, or the individual who ordered the test. Results are handled securely and are suitable for policy enforcement and legal documentation.
Yes. Accredited Drug Testing offers on-site and mobile collections for employers. Mobile testing is useful for post-accident response, reasonable suspicion situations, high-volume hiring events, and remote job sites where sending employees offsite would cause downtime.
No. You do not need a physician's prescription to request most drug or alcohol tests. Individuals, employers, attorneys, and probation officers can schedule testing directly and send the donor to the assigned collection site.

Customer Reviews

Very Fun and Easy

Trish last week and Tatiana this week, very fun and easy folks to deal with. Well be using them more and more in the future.

Tom O - 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

Super helpful and courteous

I've had to use this service twice for out of state physicians we've hired and both times it was super easy. Both customer service reps I spoke with were super helpful and courteous. I won't hesitate to use their service again if needed.

Alicia Rau - 6/19/2024


(800) 221-4291