Drug Testing Locations - Crest, CA

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

30 Drug-Testing Centers in Crest

Minutes Away, Test Today

820 Jamachard Dr Ste 1032.43 miles

820 Jamachard Dr Ste 103
El Cajon, CA 92019

1625 E Main St Ste 2032.89 miles

1625 E Main St Ste 203
El Cajon, CA 92021

1625 E Main St Ste 1002.96 miles

1625 E Main St Ste 100
El Cajon, CA 92021

9745 Prospect Ave Ste 1006.86 miles

9745 Prospect Ave Ste 100
Santee, CA 92071

5103 Garfield St,8.30 miles

5103 Garfield St,
La Mesa, CA 91941

5525 Grossmont Center Dr Ste 6018.40 miles

5525 Grossmont Center Dr Ste 601
La Mesa, CA 91942

8090 Parkway Dr9.22 miles

8090 Parkway Dr
La Mesa, CA 91942

891 Kuhn Dr Ste 11112.21 miles

891 Kuhn Dr Ste 111
Chula Vista, CA 91914

4647 Zion Ave Fl 113.10 miles

4647 Zion Ave Fl 1
San Diego, CA 92120

9620 Chesapeake Dr Ste 10414.94 miles

9620 Chesapeake Dr Ste 104
San Diego, CA 92123

5575 Ruffin Rd Ste 10015.00 miles

5575 Ruffin Rd Ste 100
San Diego, CA 92123

5575 Ruffin Rd Ste 23015.00 miles

5575 Ruffin Rd Ste 230
San Diego, CA 92123

2400 E 4th St15.05 miles

2400 E 4th St
National City, CA 91950

1000 Euclid Ave Ste B15.16 miles

1000 Euclid Ave Ste B
National City, CA 91950

4510 Viewridge Ave Occupational Medicine Business Office15.38 miles

4510 Viewridge Ave Occupational Medicine Business Office
San Diego, CA 92123

10605 Scripps Poway Pkwy Ste C15.96 miles

10605 Scripps Poway Pkwy Ste C
San Diego, CA 92131

88 E Bonita Rd Ste E16.01 miles

88 E Bonita Rd Ste E
Chula Vista, CA 91910

2815 Camino Del Rio S Ste 1a16.02 miles

2815 Camino Del Rio S Ste 1a
San Diego, CA 92108

3505 Camino Del Rio S Ste 20816.02 miles

3505 Camino Del Rio S Ste 208
San Diego, CA 92108

2667 Camino Del Rio S Ste 100h16.02 miles

2667 Camino Del Rio S Ste 100h
San Diego, CA 92108

525 3rd Ave Second Floor16.15 miles

525 3rd Ave Second Floor
Chula Vista, CA 91910

8008 Frost St Ste 10616.43 miles

8008 Frost St Ste 106
San Diego, CA 92123

7995 Armour St16.48 miles

7995 Armour St
San Diego, CA 92111

7930 Frost St Ste 40616.51 miles

7930 Frost St Ste 406
San Diego, CA 92123

7901 Frost St16.51 miles

7901 Frost St
San Diego, CA 92123

2020 Genesee Ave 2nd Floor16.73 miles

2020 Genesee Ave 2nd Floor
San Diego, CA 92123

5333 Mission Center Rd Ste 10016.76 miles

5333 Mission Center Rd Ste 100
San Diego, CA 92108

7370 Opportunity Rd Ste G16.83 miles

7370 Opportunity Rd Ste G
San Diego, CA 92111

15611 Pomerado Rd16.91 miles

15611 Pomerado Rd
Poway, CA 92064

15611 Pomerado Rd Ste 52516.91 miles

15611 Pomerado Rd Ste 525
Poway, CA 92064

Employment, DOT, Court Ordered, Probation, Family

Accredited Drug Testing delivers a wide range of drug and alcohol testing solutions across 30 locations in Crest, California. Our offerings include DOT-compliant and non-DOT urine drug screenings, breathalyzer tests for alcohol, EtG alcohol evaluations, and hair follicle drug assessments. Designed for personal, business, and legal purposes, our Crest facilities ensure swift result delivery and accredited lab analysis. We provide prompt, same-day appointments, with most centers conveniently located close to homes and offices. Other services extend to Occupational Health Assessments, Clinical Diagnostics, and Background Screening.

Dial (800) 221-4291 or visit our website to sign up. Choose your test type and find a convenient location—suitable for personal, employee, or third-party testing needs. Quick and Hassle-Free, reach out to our scheduling team or arrange your appointment online anytime. Our intuitive system makes organizing drug screenings near Crest 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.

Crest, CA Drug Testing

Drug Testing Services Available at Our Crest, CA Labs:

At our Crest 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 Crest, CA

Crest, California Statistics

In 2022, Crest, CA saw a 15% increase in opioid abuse cases, reported by the San Diego County Health Department.

2019 statistics show that Crest, in San Diego County, had 22% of its drug-related arrests linked to methamphetamine use.

A San Diego County report from 2021 indicated that Crest, CA had a 10% decline in heroin overdose deaths compared to the previous year.

In 2020, Crest experienced a 5% rise in drug-related emergency room visits, based on data from San Diego County hospitals.

Surveys from 2021 state that 18% of Crest high school students reported trying an illicit drug, according to San Diego County education officials.

In 2019, San Diego County's public health data revealed that 25% of Crest's substance abuse treatment admissions were alcohol-related.

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 Crest, CA & Drug Testing Policies

Employers in Crest, CA are increasingly adopting stringent drug-testing policies to ensure a drug-free workplace. As part of their employment process, many companies require job applicants to undergo pre-employment drug tests to screen for illegal substance use. Regular random drug tests are often conducted to maintain compliance with workplace safety standards.

Additionally, employers follow the guidelines provided by the California Department of Industrial Relations to formulate and implement effective drug policies. These measures help in maintaining productivity and safety, reducing absenteeism, and minimizing the risk of accidents attributed to drug impairment.

Government Efforts with Drug Problems in Crest, CA

The government has implemented several initiatives to address drug problems in Crest, CA. The San Diego County Health and Human Services Agency sanctions numerous programs aimed at reducing substance abuse and providing support to addicts. Community-based interventions and school programs are also a critical part of their strategy to educate the youth about the dangers of drug use.

Furthermore, Crest benefits from state-level initiatives facilitated by the California Department of Health Care Services which provides funding and resources for local rehabilitation centers and recovery programs. Federal grants are also directed toward strengthening law enforcement's role in tackling drug distribution networks.

Local Drug Busts & News in Crest, CA

Recent drug busts in Crest, CA have highlighted the persistent issue of illegal drug trafficking in the region. San Diego County law enforcement agencies announced a significant operation in 2022, which resulted in the confiscation of large quantities of cocaine and methamphetamines from local distribution rings, as reported by the San Diego County Sheriff's Department.

Community involvement plays an essential role in addressing drug problems, with multiple outreach events and forums organized every year to raise awareness. Local non-profit organizations collaborate with law enforcement to conduct workshops and events that aim to educate the community about the risks of drug abuse and the importance of prevention.

Occupational Health Services

Accredited Drug Testing offers fast, reliable employment screening services in Crest, 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

Recovery.org Crest

Sharp Behavioral Health

Treatment Centers

San Diego County Behavioral Health Services

Above Not Treatment

California Healthcare Services SUD Resources

San Diego Foundation

NAMI San Diego

Crest Drug Testing

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

Crest DOT Drug Testing

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

Crest DNA Testing

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

Crest Industry Training

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

Crest Hair Drug Testing

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

Crest Alcohol Testing

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

Crest Drug Testing Services

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

Crest 5 Panel Drug Test

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

Crest 10 Panel Drug Test

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

Crest On Site Drug Testing

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

Crest DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Crest, 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