Drug Testing Locations - Redwood Valley, CA

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

31 Drug-Testing Centers in Redwood Valley

Minutes Away, Test Today

1400 Veterans Blvd Fl 10.96 miles

1400 Veterans Blvd Fl 1
Redwood City, CA 94063

170 Alameda De Las Pulgas1.00 miles

170 Alameda De Las Pulgas
Redwood City, CA 94062

1100 Laurel Street, Suite F1.37 miles

1100 Laurel Street, Suite F
San Carlos, CA 94070

125 Shoreway Rd Ste A2.81 miles

125 Shoreway Rd Ste A
San Carlos, CA 94070

222 W 39th Ave4.64 miles

222 W 39th Ave
San Mateo, CA 94403

300 Pasteur Dr4.76 miles

300 Pasteur Dr
Palo Alto, CA 94304

1098 Foster City Blvd, Ste 1024.85 miles

1098 Foster City Blvd, Ste 102
Foster City, CA 94404

795 El Camino Real5.04 miles

795 El Camino Real
Palo Alto, CA 94301

60 N El Camino Real7.72 miles

60 N El Camino Real
San Mateo, CA 94401

2290 W El Camino Real Ste 49.38 miles

2290 W El Camino Real Ste 4
Mountain View, CA 94040

1860 El Camino Real Ste 40010.65 miles

1860 El Camino Real Ste 400
Burlingame, CA 94010

35500 Dumbarton Ct11.00 miles

35500 Dumbarton Ct
Newark, CA 94560

1501 Trousdale Dr11.04 miles

1501 Trousdale Dr
Burlingame, CA 94010

1663 Rollins Rd11.18 miles

1663 Rollins Rd
Burlingame, CA 94010

3555 Whipple Rd11.83 miles

3555 Whipple Rd
Union City, CA 94587

2500 Grant Rd11.86 miles

2500 Grant Rd
Mountain View, CA 94040

573 W El Camino Real11.94 miles

573 W El Camino Real
Mountain View, CA 94040

29000 Hesperian Blvd12.16 miles

29000 Hesperian Blvd
Hayward, CA 94545

26250 Industrial Blvd Ste 3212.33 miles

26250 Industrial Blvd Ste 32
Hayward, CA 94545

33077 Alvarado Niles Rd12.96 miles

33077 Alvarado Niles Rd
Union City, CA 94587

27200 Calaroga Ave12.99 miles

27200 Calaroga Ave
Hayward, CA 94545

901 W El Camino Real13.17 miles

901 W El Camino Real
Sunnyvale, CA 94087

33560 Alvarado Niles Rd13.22 miles

33560 Alvarado Niles Rd
Union City, CA 94587

39180 Farwell Dr Ste 23113.48 miles

39180 Farwell Dr Ste 231
Fremont, CA 94538

877 W Fremont Avenue, Ste H-213.76 miles

877 W Fremont Avenue, Ste H-2
Sunnyvale, CA 94087

5763 Stevenson Blvd13.85 miles

5763 Stevenson Blvd
Newark, CA 94560

42650 Christy St14.12 miles

42650 Christy St
Fremont, CA 94538

801 Traeger Ave Ste 21214.19 miles

801 Traeger Ave Ste 212
San Bruno, CA 94066

2147 Mowry Ave Ste C114.82 miles

2147 Mowry Ave Ste C1
Fremont, CA 94538

3161 Walnut Ave14.85 miles

3161 Walnut Ave
Fremont, CA 94538

2000 Mowry Ave14.92 miles

2000 Mowry Ave
Fremont, CA 94538

Employment, DOT, Court Ordered, Probation, Family

At our 31 testing centers in Redwood Valley, California, Accredited Drug Testing provides extensive drug and alcohol testing services. In addition to both DOT and non-DOT urine tests, we offer breath and EtG alcohol screening as well as hair drug tests for individual, corporate, and legal purposes. Quick-result testing and SAMSA-certified lab analyses are available in Redwood Valley, CA, with most testing locations conveniently located. We also provide Occupational Health Testing, Clinical Testing, and Background Checks.

To schedule a test, call (800) 221-4291 or register online. Select your preferred test and test site—services are available for personal, employee, or third-party testing. Our scheduling is straightforward and accessible via phone or online 24/7. With our efficient and intuitive system, arranging a drug test in Redwood Valley is seamless.

* 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.

Redwood Valley, CA Drug Testing

Drug Testing Services Available at Our Redwood Valley, CA Labs:

At our Redwood Valley 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 Redwood Valley, CA

Redwood Valley, California Statistics

In Redwood Valley, Mendocino County, over 15% of high school students have reported trying illicit drugs at least once.

Mendocino County, which includes Redwood Valley, sees higher opioid prescription rates compared to the state average.

Over 7% of Redwood Valley residents have sought treatment for substance use disorders in the past two years.

The rate of drug-related arrests in Redwood Valley, Mendocino County, increased by 10% from 2020 to 2022.

Mendocino County has one of the highest per capita rates of opioid-related deaths in California, affecting communities like Redwood Valley.

Redwood Valley, Mendocino County, reports that nearly 25% of DUI arrests involve illicit drug use.

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 Redwood Valley, CA & Drug Testing Policies

Employers in Redwood Valley, CA, typically adhere to both state and federal guidelines regarding drug-free workplace policies. These standards encourage employers to establish comprehensive drug testing policies to ensure a safe working environment.

Most companies in the area implement pre-employment and random drug testing, often in compliance with the guidelines offered by the U.S. Department of Labor. This approach helps maintain safety and productivity while supporting employees through substance abuse programs if needed.

Government Efforts with Drug Problems in Redwood Valley, CA

The government in Redwood Valley, CA, part of Mendocino County, has implemented multiple initiatives to combat drug abuse. Programs like the Mendocino County Health and Human Services Agency focus on providing education and resources for prevention and treatment.

In partnership with state efforts such as the California Department of Health Care Services, Redwood Valley aims to reduce drug-related harm through community outreach and support systems. These efforts include enhancing access to treatment centers and increasing public awareness campaigns.

Local Drug Busts & News in Redwood Valley, CA

Recent drug bust operations in Redwood Valley, CA, have led to significant seizures of illicit substances. One notable event involved collaboration between local law enforcement and federal agencies, resulting in the confiscation of large quantities of narcotics.

Community awareness events are frequently organized to inform residents about the dangers of drug abuse. These events aim to educate and support families affected by addiction, often supported by local nonprofits and public health organizations.

Occupational Health Services

Accredited Drug Testing offers fast, reliable employment screening services in Redwood Valley, 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

Mendocino County Behavioral Health

Kaiser Permanente Addiction Medicine

National Institute on Drug Abuse

Substance Abuse and Mental Health Services Administration

California DHCS Substance Use Disorder Services

Redwood Community Services

Partnership HealthPlan of California

Southern Humboldt Community Health District

Cure Addiction Now

Alcoholics Anonymous

Redwood Valley Drug Testing

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

Redwood Valley DOT Drug Testing

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

Redwood Valley DNA Testing

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

Redwood Valley Industry Training

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

Redwood Valley Hair Drug Testing

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

Redwood Valley Alcohol Testing

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

Redwood Valley Drug Testing Services

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

Redwood Valley 5 Panel Drug Test

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

Redwood Valley 10 Panel Drug Test

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

Redwood Valley On Site Drug Testing

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

Redwood Valley DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Redwood Valley, 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