Drug Testing Locations - Central Contra Costa, CA

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

39 Drug-Testing Centers in Central Contra Costa

Minutes Away, Test Today

108 La Casa Via, Ste 1050.67 miles

108 La Casa Via, Ste 105
Walnut Creek, CA 94598

1981 N Broadway Ste 1901.13 miles

1981 N Broadway Ste 190
Walnut Creek, CA 94596

320 Lennon Ln Fl 21.20 miles

320 Lennon Ln Fl 2
Walnut Creek, CA 94598

1425 S Main St1.95 miles

1425 S Main St
Walnut Creek, CA 94596

401 Gregory Ln, Ste 1462.38 miles

401 Gregory Ln, Ste 146
Pleasant Hill, CA 94523

609 Gregory Ln Ste 1002.55 miles

609 Gregory Ln Ste 100
Pleasant Hill, CA 94523

2090 Commerce Ave3.81 miles

2090 Commerce Ave
Concord, CA 94520

2231 Galaxy Ct3.93 miles

2231 Galaxy Ct
Concord, CA 94520

2280 Diamond Blvd Ste 5204.04 miles

2280 Diamond Blvd Ste 520
Concord, CA 94520

2477 Pacheco St4.31 miles

2477 Pacheco St
Concord, CA 94520

2425 East Street, Suite 64.40 miles

2425 East Street, Suite 6
Concord, CA 94520

2540 East St4.46 miles

2540 East St
Concord, CA 94520

5167 Clayton Rd Ste H5.17 miles

5167 Clayton Rd Ste H
Concord, CA 94521

1805 Arnold Dr5.66 miles

1805 Arnold Dr
Martinez, CA 94553

827 Arnold Dr Ste 706.43 miles

827 Arnold Dr Ste 70
Martinez, CA 94553

200 Muir Rd Hacienda Bldg, 1st Floor6.94 miles

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

3237 Alhambra Ave Ste 27.16 miles

3237 Alhambra Ave Ste 2
Martinez, CA 94553

1001 Pittsburg Antioch Hwy Ste B10.20 miles

1001 Pittsburg Antioch Hwy Ste B
Pittsburg, CA 94565

3774 Railroad Ave Ste C10.34 miles

3774 Railroad Ave Ste C
Pittsburg, CA 94565

2301 Camino Ramon Ste 10810.94 miles

2301 Camino Ramon Ste 108
San Ramon, CA 94583

6001 Norris Canyon Rd Ste 14211.01 miles

6001 Norris Canyon Rd Ste 142
San Ramon, CA 94583

5601 Norris Canyon Rd Ste 14011.01 miles

5601 Norris Canyon Rd Ste 140
San Ramon, CA 94583

1901 Railroad Ave Ste B11.25 miles

1901 Railroad Ave Ste B
Pittsburg, CA 94565

1251 California Ave Ste 60011.64 miles

1251 California Ave Ste 600
Pittsburg, CA 94565

4749 Surrey Ln11.66 miles

4749 Surrey Ln
El Sobrante, CA 94803

538 Stone Rd Ste G11.74 miles

538 Stone Rd Ste G
Benicia, CA 94510

2450 Ashby Ave12.15 miles

2450 Ashby Ave
Berkeley, CA 94705

2339 Buchanan Rd12.45 miles

2339 Buchanan Rd
Antioch, CA 94509

1517 Grand Ave12.48 miles

1517 Grand Ave
Piedmont, CA 94611

3400 Delta Fair Blvd12.78 miles

3400 Delta Fair Blvd
Antioch, CA 94509

4069 Piedmont Ave Ste 91012.82 miles

4069 Piedmont Ave Ste 910
Oakland, CA 94611

3701 Broadway Fl 513.15 miles

3701 Broadway Fl 5
Oakland, CA 94611

3300 Webster St, Ste 111013.41 miles

3300 Webster St, Ste 1110
Oakland, CA 94609

2042 Columbus Pkwy,13.46 miles

2042 Columbus Pkwy,
Benicia, CA 94510

350 Hawthorne Ave13.49 miles

350 Hawthorne Ave
Oakland, CA 94609

1100 Rose Dr Ste 14013.49 miles

1100 Rose Dr Ste 140
Benicia, CA 94510

2505 Bataan St Ste O13.86 miles

2505 Bataan St Ste O
Oakland, CA 94607

500 Alfred Nobel Drive, Suite 11513.94 miles

500 Alfred Nobel Drive, Suite 115
Hercules, CA 94547

2850 7th St Ste 10013.97 miles

2850 7th St Ste 100
Berkeley, CA 94710

Employment, DOT, Court Ordered, Probation, Family

Accredited Drug Testing provides extensive drug and alcohol testing services across 39 locations in the Central Contra Costa, CA region. Our offerings include DOT and non-DOT urine tests, breath alcohol screening, EtG alcohol assessments, and hair drug tests for personal, business, and legal purposes. With rapid results testing and assessments certified by SAMSA, many centers are conveniently situated just minutes from your residence or workplace. Same day service is an option. Additional offerings encompass Occupational Health Testing, Clinical Testing, and Background Checks.

To get started, call (800) 221-4291 or register via our online system. Pick your desired test and select a convenient location; tests cater to personal, employee, or third-party needs. Experience easy scheduling by contacting our department or utilizing our 24/7 online platform. Our efficient, user-friendly system ensures simple arrangement of testing services near Central Contra Costa.

* 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.

Central Contra Costa, CA Drug Testing

Drug Testing Services Available at Our Central Contra Costa, CA Labs:

At our Central Contra Costa 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 Central Contra Costa, CA

Central Contra Costa, California Statistics

In Concord, CA, opioid overdose deaths increased by 15% in 2022 according to the Contra Costa County Coroner's Office.

Walnut Creek, CA saw a 25% rise in methamphetamine-related arrests in 2022 as per the Contra Costa County Sheriff's Office.

In Pleasant Hill, CA, 12% of high school students reported using illicit drugs at least once monthly in 2022, according to a local health survey.

Lafayette, CA recorded a 30% increase in cannabis abuse cases at the local emergency room in 2022, stated by John Muir Health.

Martinez, CA had the highest rate of fentanyl-related incidents in Central Contra Costa County in the past year, reports the Contra Costa Health Services.

In Clayton, CA, the police department reported a 40% increase in drug trafficking incidents in 2022.

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 Central Contra Costa, CA & Drug Testing Policies

Employers in Central Contra Costa, CA are committed to maintaining a drug-free workplace to ensure safety and productivity. Many companies have implemented policies that include pre-employment drug screenings and random testing to deter drug abuse among employees, aligning with state guidelines from the California Department of Industrial Relations.

Local businesses are encouraged to follow best practices in drug policy management provided by resources such as the Occupational Safety and Health Administration (OSHA). These policies not only help in maintaining safety standards but also promote healthier work environments, reducing the likelihood of accidents and enhancing overall employee well-being.

Government Efforts with Drug Problems in Central Contra Costa, CA

The government of Central Contra Costa, CA, has implemented comprehensive strategies to address drug problems, emphasizing prevention, treatment, and enforcement. Key efforts include collaborating with local organizations and health services to provide support and resources for affected individuals. Various initiatives are driven by the Contra Costa County Government to improve public awareness and education on substance abuse issues.

At the state level, California offers robust support via programs like California Department of Public Health and California Department of Health Care Services, which provide funding and guidance for local efforts. These initiatives aim to reduce the impact of drug abuse, improve community safety, and promote healthier lifestyles among residents.

Local Drug Busts & News in Central Contra Costa, CA

In recent years, central Contra Costa County has witnessed significant efforts to crack down on drug trafficking. Local law enforcement agencies have been proactive in executing coordinated raids targeting known distribution hubs. These operations have successfully intercepted large quantities of illegal substances, curbing the supply and dismantling networks that operate across city lines. Community awareness programs complement these efforts, striving to educate residents on the dangers of drug abuse. The collaboration between local police and federal agencies has also been instrumental in addressing the drug problem. By pooling resources and intelligence, these partnerships have led to the arrest of several high-profile figures in the drug trade. These operations have not only disrupted the flow of narcotics into the region but have also sent a clear message to traffickers about the community's zero-tolerance stance on drug-related activities. In addition to enforcement, central Contra Costa County has committed to rehabilitation and support services for individuals affected by drug addiction. Local organizations work tirelessly to provide counseling, treatment, and aftercare programs aimed at reducing relapse rates. Moreover, outreach efforts target at-risk populations, particularly the youth, offering education and resources to build resilience against the temptation of drug use.

Occupational Health Services

Accredited Drug Testing offers fast, reliable employment screening services in Central Contra Costa, 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

Contra Costa o-drug Safety Coalition

Contra Costa County Home and Recovery

West County Health Centers

Sunol Community Center

East Bay Community Recovery Project

Alcoholics Anonymous California

Nar-Anon Family Groups

Communities for a Drug-Free Contra Costa

Central Contra Costa Drug Testing

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

Central Contra Costa DOT Drug Testing

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

Central Contra Costa DNA Testing

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

Central Contra Costa Industry Training

Including specimen collector training, DER training, reasonable suspicion training and much more in Central Contra Costa, CA.v

Central Contra Costa Hair Drug Testing

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

Central Contra Costa Alcohol Testing

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

Central Contra Costa Drug Testing Services

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

Central Contra Costa 5 Panel Drug Test

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

Central Contra Costa 10 Panel Drug Test

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

Central Contra Costa On Site Drug Testing

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

Central Contra Costa DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Central Contra Costa, 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