Drug Testing Locations - North Gate, CA

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

39 Drug-Testing Centers in North Gate

Minutes Away, Test Today

320 Lennon Ln Fl 22.13 miles

320 Lennon Ln Fl 2
Walnut Creek, CA 94598

108 La Casa Via, Ste 1052.39 miles

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

1981 N Broadway Ste 1903.37 miles

1981 N Broadway Ste 190
Walnut Creek, CA 94596

1425 S Main St3.40 miles

1425 S Main St
Walnut Creek, CA 94596

5167 Clayton Rd Ste H3.64 miles

5167 Clayton Rd Ste H
Concord, CA 94521

401 Gregory Ln, Ste 1464.83 miles

401 Gregory Ln, Ste 146
Pleasant Hill, CA 94523

609 Gregory Ln Ste 1005.12 miles

609 Gregory Ln Ste 100
Pleasant Hill, CA 94523

2477 Pacheco St5.16 miles

2477 Pacheco St
Concord, CA 94520

2090 Commerce Ave5.18 miles

2090 Commerce Ave
Concord, CA 94520

2231 Galaxy Ct5.31 miles

2231 Galaxy Ct
Concord, CA 94520

2425 East Street, Suite 65.35 miles

2425 East Street, Suite 6
Concord, CA 94520

2540 East St5.41 miles

2540 East St
Concord, CA 94520

2280 Diamond Blvd Ste 5205.74 miles

2280 Diamond Blvd Ste 520
Concord, CA 94520

1805 Arnold Dr7.82 miles

1805 Arnold Dr
Martinez, CA 94553

827 Arnold Dr Ste 708.73 miles

827 Arnold Dr Ste 70
Martinez, CA 94553

3774 Railroad Ave Ste C8.75 miles

3774 Railroad Ave Ste C
Pittsburg, CA 94565

1001 Pittsburg Antioch Hwy Ste B8.85 miles

1001 Pittsburg Antioch Hwy Ste B
Pittsburg, CA 94565

200 Muir Rd Hacienda Bldg, 1st Floor9.42 miles

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

2301 Camino Ramon Ste 1089.43 miles

2301 Camino Ramon Ste 108
San Ramon, CA 94583

6001 Norris Canyon Rd Ste 1429.43 miles

6001 Norris Canyon Rd Ste 142
San Ramon, CA 94583

5601 Norris Canyon Rd Ste 1409.43 miles

5601 Norris Canyon Rd Ste 140
San Ramon, CA 94583

3237 Alhambra Ave Ste 29.54 miles

3237 Alhambra Ave Ste 2
Martinez, CA 94553

1901 Railroad Ave Ste B9.80 miles

1901 Railroad Ave Ste B
Pittsburg, CA 94565

1251 California Ave Ste 6009.98 miles

1251 California Ave Ste 600
Pittsburg, CA 94565

2339 Buchanan Rd10.45 miles

2339 Buchanan Rd
Antioch, CA 94509

3400 Delta Fair Blvd10.82 miles

3400 Delta Fair Blvd
Antioch, CA 94509

3901 Lone Tree Way12.34 miles

3901 Lone Tree Way
Antioch, CA 94509

538 Stone Rd Ste G13.52 miles

538 Stone Rd Ste G
Benicia, CA 94510

3450 Hillcrest Ave13.63 miles

3450 Hillcrest Ave
Antioch, CA 94531

4501 Sand Creek Rd13.83 miles

4501 Sand Creek Rd
Antioch, CA 94531

7667 Amador Valley Blvd14.43 miles

7667 Amador Valley Blvd
Dublin, CA 94568

4749 Surrey Ln14.47 miles

4749 Surrey Ln
El Sobrante, CA 94803

2450 Ashby Ave14.54 miles

2450 Ashby Ave
Berkeley, CA 94705

1517 Grand Ave14.56 miles

1517 Grand Ave
Piedmont, CA 94611

4069 Piedmont Ave Ste 91014.96 miles

4069 Piedmont Ave Ste 910
Oakland, CA 94611

3701 Broadway Fl 515.29 miles

3701 Broadway Fl 5
Oakland, CA 94611

20400 Lake Chabot Rd Ste 101,15.50 miles

20400 Lake Chabot Rd Ste 101,
Castro Valley, CA 94546

3300 Webster St, Ste 111015.54 miles

3300 Webster St, Ste 1110
Oakland, CA 94609

5720 Stoneridge Mall Road, Suite 11015.55 miles

5720 Stoneridge Mall Road, Suite 110
Pleasanton, CA 94588

Employment, DOT, Court Ordered, Probation, Family

Accredited Drug Testing delivers a full suite of drug and alcohol testing services at 39 convenient locations in North Gate, California. We offer DOT and non-DOT urine analysis, breath alcohol checks, EtG alcohol screens, and hair drug tests tailored for personal, workplace, or legal use. Available services in North Gate, CA include quick-result tests and thorough analysis from SAMSA certified labs, with options for same-day appointments and proximity to your home or workplace. Further services encompass Occupational Health Examinations, Clinical Assessments, and Background Verification.

Reach out at (800) 221-4291 or register online effortlessly. Choose your test type and location—the service caters to individual, employee, or third-party needs. With our efficient system, test setup is straightforward and available 24/7. Our easy-to-navigate process enables seamless drug testing arrangements in North Gate.

* 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.

North Gate, CA Drug Testing

Drug Testing Services Available at Our North Gate, CA Labs:

At our North Gate 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 North Gate, CA

North Gate, California Statistics

The North Gate area in Contra Costa County has reported a 15% increase in opioid-related deaths over the last five years.

Methamphetamine remains the most commonly used illicit drug in North Gate, CA, with 40% of drug-related arrests linked to it.

Teen drug use in North Gate, CA, is estimated to be 20% below the national average, according to local school surveys.

In Contra Costa County, alcohol and marijuana account for over 70% of substance abuse treatment admissions.

Narcotics Anonymous meetings in North Gate, CA, have increased by 25% to address the growing demand for addiction support.

North Gate, CA, features prominently in county-funded anti-drug initiatives, with over $500,000 allocated to local programs annually.

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 North Gate, CA & Drug Testing Policies

In North Gate, CA, employers are keenly aware of the implications of substance abuse on workplace productivity and safety. As such, many local businesses have instituted strict drug testing policies as a preemptive measure.

These policies often align with guidelines from organizations like the Department of Transportation, particularly for roles involving public safety or requiring the operation of heavy machinery. Some employers also work closely with the Contra Costa Chamber of Commerce to promote a drug-free workplace environment.

Government Efforts with Drug Problems in North Gate, CA

The government of North Gate, CA, has been actively addressing the escalating drug issues through various local and federal partnerships. Significant investments have been made in public health campaigns and rehabilitation facilities to curb the growing rates of substance abuse.

Authorities collaborate with state agencies like the California Department of Health Care Services and federal programs such as the Substance Abuse and Mental Health Services Administration, enhancing community access to prevention and treatment resources.

Local Drug Busts & News in North Gate, CA

North Gate, CA, has witnessed several significant drug busts in recent years. These operations, often conducted by the Contra Costa County Sheriff's Office, have led to substantial seizures of illicit substances and disbandment of criminal networks responsible for drug trafficking.

Community events aimed at combatting drug abuse, including awareness and outreach seminars hosted by local civic organizations, play a crucial role in educating residents about the dangers of illicit drug use and prevention strategies.

Occupational Health Services

Accredited Drug Testing offers fast, reliable employment screening services in North Gate, 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

California Department of Health Care Services - SUD Services

Substance Abuse and Mental Health Services Administration

Drug Free Concord

Alcoholics Anonymous

Narcotics.com

The Bridge - Contra Costa

Stanford CADABRA Project

Office of National Drug Control Policy

Contra Costa County Alcohol and Other Drugs Services

NAMI Urban Los Angeles

North Gate Drug Testing

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

North Gate DOT Drug Testing

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

North Gate DNA Testing

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

North Gate Industry Training

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

North Gate Hair Drug Testing

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

North Gate Alcohol Testing

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

North Gate Drug Testing Services

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

North Gate 5 Panel Drug Test

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

North Gate 10 Panel Drug Test

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

North Gate On Site Drug Testing

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

North Gate DOT Physicals

Certified DOT physicals with quick, reliable exams to keep North Gate, 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