Drug Testing Locations - Shell Ridge, CA

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

40 Drug-Testing Centers in Shell Ridge

Minutes Away, Test Today

108 La Casa Via, Ste 1050.76 miles

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

320 Lennon Ln Fl 21.30 miles

320 Lennon Ln Fl 2
Walnut Creek, CA 94598

1981 N Broadway Ste 1901.74 miles

1981 N Broadway Ste 190
Walnut Creek, CA 94596

1425 S Main St1.96 miles

1425 S Main St
Walnut Creek, CA 94596

401 Gregory Ln, Ste 1463.59 miles

401 Gregory Ln, Ste 146
Pleasant Hill, CA 94523

609 Gregory Ln Ste 1003.81 miles

609 Gregory Ln Ste 100
Pleasant Hill, CA 94523

2090 Commerce Ave4.59 miles

2090 Commerce Ave
Concord, CA 94520

5167 Clayton Rd Ste H4.68 miles

5167 Clayton Rd Ste H
Concord, CA 94521

2231 Galaxy Ct4.72 miles

2231 Galaxy Ct
Concord, CA 94520

2477 Pacheco St4.88 miles

2477 Pacheco St
Concord, CA 94520

2280 Diamond Blvd Ste 5204.98 miles

2280 Diamond Blvd Ste 520
Concord, CA 94520

2425 East Street, Suite 65.02 miles

2425 East Street, Suite 6
Concord, CA 94520

2540 East St5.08 miles

2540 East St
Concord, CA 94520

1805 Arnold Dr6.81 miles

1805 Arnold Dr
Martinez, CA 94553

827 Arnold Dr Ste 707.63 miles

827 Arnold Dr Ste 70
Martinez, CA 94553

200 Muir Rd Hacienda Bldg, 1st Floor8.19 miles

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

3237 Alhambra Ave Ste 28.38 miles

3237 Alhambra Ave Ste 2
Martinez, CA 94553

1001 Pittsburg Antioch Hwy Ste B9.88 miles

1001 Pittsburg Antioch Hwy Ste B
Pittsburg, CA 94565

2301 Camino Ramon Ste 1089.88 miles

2301 Camino Ramon Ste 108
San Ramon, CA 94583

3774 Railroad Ave Ste C9.91 miles

3774 Railroad Ave Ste C
Pittsburg, CA 94565

5601 Norris Canyon Rd Ste 1409.93 miles

5601 Norris Canyon Rd Ste 140
San Ramon, CA 94583

6001 Norris Canyon Rd Ste 1429.93 miles

6001 Norris Canyon Rd Ste 142
San Ramon, CA 94583

1901 Railroad Ave Ste B10.89 miles

1901 Railroad Ave Ste B
Pittsburg, CA 94565

1251 California Ave Ste 60011.18 miles

1251 California Ave Ste 600
Pittsburg, CA 94565

2339 Buchanan Rd11.82 miles

2339 Buchanan Rd
Antioch, CA 94509

3400 Delta Fair Blvd12.17 miles

3400 Delta Fair Blvd
Antioch, CA 94509

538 Stone Rd Ste G12.79 miles

538 Stone Rd Ste G
Benicia, CA 94510

4749 Surrey Ln12.90 miles

4749 Surrey Ln
El Sobrante, CA 94803

2450 Ashby Ave12.96 miles

2450 Ashby Ave
Berkeley, CA 94705

1517 Grand Ave13.09 miles

1517 Grand Ave
Piedmont, CA 94611

4069 Piedmont Ave Ste 91013.46 miles

4069 Piedmont Ave Ste 910
Oakland, CA 94611

3701 Broadway Fl 513.80 miles

3701 Broadway Fl 5
Oakland, CA 94611

3901 Lone Tree Way13.90 miles

3901 Lone Tree Way
Antioch, CA 94509

3300 Webster St, Ste 111014.05 miles

3300 Webster St, Ste 1110
Oakland, CA 94609

350 Hawthorne Ave14.12 miles

350 Hawthorne Ave
Oakland, CA 94609

2042 Columbus Pkwy,14.65 miles

2042 Columbus Pkwy,
Benicia, CA 94510

1100 Rose Dr Ste 14014.68 miles

1100 Rose Dr Ste 140
Benicia, CA 94510

7817 Oakport St14.75 miles

7817 Oakport St
Oakland, CA 94621

7901 Oakport St Ste 4950 2nd Floor14.77 miles

7901 Oakport St Ste 4950 2nd Floor
Oakland, CA 94621

2505 Bataan St Ste O14.79 miles

2505 Bataan St Ste O
Oakland, CA 94607

Employment, DOT, Court Ordered, Probation, Family

Accredited Drug Testing delivers extensive substance screening services catering to both drug and alcohol-related needs at our 40 testing sites in the Shell Ridge, California vicinity. We administer a variety of tests including DOT compliant and non-DOT urine tests, breathalyzer tests, EtG tests, and hair follicle drug tests for personal, workplace, or legal purposes. Our quick testing with swift results is available in Shell Ridge, CA, with certified laboratory confirmations. Most locations are conveniently close to your residence or workplace. We also provide Occupational Health Testing, Clinical Assessments, and Background Verification.

Dial (800) 221-4291 or visit our website to book your test. It's simple to choose your test and find a location nearby—whether it's for you, your staff, or someone else. Scheduling is quick and straightforward. Contact our scheduling team by phone or arrange your test anytime online. Our seamless process makes organizing drug tests near Shell Ridge a breeze.

* 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.

Shell Ridge, CA Drug Testing

Drug Testing Services Available at Our Shell Ridge, CA Labs:

At our Shell Ridge 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 Shell Ridge, CA

Shell Ridge, California Statistics

In Shell Ridge, CA, Contra Costa County reports a 15% increase in opioid-related overdoses over the past two years.

Shell Ridge, CA has seen a 10% rise in drug-treatment admissions according to Contra Costa County health services.

The Contra Costa County Sheriff's Office reported a 12% increase in drug-related arrests in Shell Ridge, CA in the past year.

Contra Costa County data reveals that 7% of Shell Ridge, CA residents under 18 have tried an illicit substance.

Shell Ridge, CA ranks among the top three cities in Contra Costa County for methamphetamine arrests.

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 Shell Ridge, CA & Drug Testing Policies

Companies and employers in Shell Ridge, CA are increasingly adopting stringent drug-testing policies to ensure a safe working environment. These screenings are in accordance with the guidelines prescribed by the U.S. Department of Labor.

Several industries, including construction and transportation, mandate regular drug testing to comply with both federal and local regulations. Employees are informed about these policies during the hiring process to maintain transparency and compliance.

Government Efforts with Drug Problems in Shell Ridge, CA

Government efforts to tackle drug-related issues in Shell Ridge, CA have been robust, with initiatives led both locally and at the state level. The California Department of Health Care Services supports various drug prevention and treatment programs in Contra Costa County.

Additionally, the Contra Costa Health Services has rolled out community outreach campaigns and partnerships with local law enforcement to combat the drug epidemic in Shell Ridge and surrounding areas.

Local Drug Busts & News in Shell Ridge, CA

Residents of Shell Ridge, CA were recently alarmed by a major drug bust led by the Contra Costa County Sheriff's Office. This operation, one of the largest in recent years, resulted in several arrests and the seizure of a significant quantity of illegal substances.

Local authorities have assured the community of their steadfast commitment to fighting drug trafficking in the area. Public forums and community meetings are frequently scheduled to keep residents informed about ongoing efforts and to promote public safety.

Occupational Health Services

Accredited Drug Testing offers fast, reliable employment screening services in Shell Ridge, 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

National Council on Alcoholism and Drug Dependence

SAMHSA National Helpline

National Institute on Drug Abuse

Cocaine Anonymous California

Alcoholics Anonymous

Narcotics Anonymous

Nar-Anon Family Groups

California Drug Free Youth

Contra Costa County Alcohol & Other Drugs Services

CRC Health Group

Shell Ridge Drug Testing

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

Shell Ridge DOT Drug Testing

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

Shell Ridge DNA Testing

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

Shell Ridge Industry Training

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

Shell Ridge Hair Drug Testing

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

Shell Ridge Alcohol Testing

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

Shell Ridge Drug Testing Services

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

Shell Ridge 5 Panel Drug Test

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

Shell Ridge 10 Panel Drug Test

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

Shell Ridge On Site Drug Testing

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

Shell Ridge DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Shell Ridge, 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