California Drug Testing

US Drug Test Centers has a large network of alcohol and drug testing collection sites throughout the state of California. We provide screening for every single one of your drug and alcohol testing needs, whether you're an employer, employee, or an individual needing to order a drug test. Same-day appointments are available for a myriad of drug testing options. Companies can call US Drug Test Centers now to create a drug testing account in a few easy steps!

Keep reading to learn more about the exact drug testing services we offer in California.


Our testing locations do not accept payment and require a drug test order form at the time of testing. Please click the "Order a Test" button to order your test. Once your order has been processed, your drug test order form will be emailed to you. Testing options may vary on a site by site basis. Additional fees may apply depending on your location.

Committed to Accuracy

We only work with SAMHSA-certified laboratories and have all test results confirmed by a medical review officer.

Unparalleled Convenience

With drug testing locations spread throughout California, you never have to go far to find us. For speedy results, we offer instant urine drug testing and on-site mobile testing.

Endless Variety

We can screen for dozens of illicit substances via hair, urine, and breath. Additionally, we have hundreds of drug test panels to choose from.

2086 Testing locations in California

28991 Front St Ste 104

Temecula California 92590

Phone: 866-566-0261


LA PALMA California 90623

Phone: 866-566-0261

6911 Convoy Court, 3Rd Floor

San Diego California 92111

Phone: 866-566-0261

24329 Crenshaw Blvd

Torrance California 90505

Phone: 866-566-0261

8100 California City Blvd

California City California 93505

Phone: 866-566-0261


2081 more location(s) available in California

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Local Reviews

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Review by J.W.
on May 1, 2024

"Everyone I have talked too has always been nothing but a pleasure to work with. They always go above and beyond to help with any questions I may have."

Review by T.G.
on April 24, 2024

"Good service gets the job done"

Review by S.K.
on April 24, 2024

"Very knowledgeable about this"

Review by S.S.
on April 24, 2024

"They're on top of their business, we'll organized."

Review by C.M.
on March 14, 2024

"it was helpful!"

Review by P.F.
on December 13, 2023

"Very satisfied with the service"

Review by N.O.
on December 5, 2023


US Drug Test Centers

US Drug Test Centers

We are your complete drug-free workplace solution for employers. We provide drug testing for all reasons such as pre-employment, random, reasonable suspicion, post-accident, and return to duty. We have a state-of-the-art cloud-based software that allows you to order drug testing 24/7, store all drug test results and chain of custody forms (forever), and you can see the status of all completed drug testing. We have random drug and alcohol testing consortiums and follow all DOT rules and regulations to direct your company in the right direction to stay in compliance. We can create drug-free workplace policy manuals specific to your company's needs, and we provide online trainings. Our online trainings are perfect for company Supervisors to learn what signs to look for if someone might be under the influence. We also have trainings that explain what Supervisors should know about the DOT rules and regulations in regards to the drug and alcohol testing program. We are a part of the Drug and Alcohol Testing Industry Association (DATIA), and we always stay up to date with all drug testing-related rules and regulations. If you have any questions about state-specific laws regarding drug and alcohol testing, please contact our office and one of our team members will be glad to help you. If your company would like more information regarding setting up a corporate account you can set up an account online or contact us at 866-566-0261.

Frequently Asked Questions About California Drug Testing

This material is intended for informational purposes only and should not be relied upon for legal guidance. State & local laws change frequently and vary greatly. These are state & local laws and do not over rule the federal Department of Transportation laws & policies. Readers are advised to consult with their legal counsel or industry experts before acting based on this information. Last Updated May 2023

California Drug Testing FAQs

Do employers in California need to comply with mandatory state-specific rules when drug & alcohol testing?
Yes. California has rules based on court rulings, rather than legislative action.
Is a Drug-Free Workplace policy required in California?
No, however, employers are strongly encouraged to have a written policy in place (Policy is specifically required to comply with the California’s voluntary law). Employers are also strongly encouraged to warn employees and applicants and get signed acknowledgments of the warning, that the use of medication from a foreign source may cause a positive drug test.
What are some compliance requirements in California?
Random testing is limited to safety-sensitive employees only. Employers are encouraged not to let an applicant begin work before the pre-employment drug test result is known.  A reasonable suspicion test unsupported by facts is an unauthorized random test. Requiring a drug test collection during off-duty hours may be prohibited. Employers based in San Francisco are limited in what they can and cannot do, due to a city ordinance.
Are employers in California able to use drug screening for any other claim defenses or state-specific financial benefits?
Yes. Employers may leverage an ‘Intoxication’ defense to a Workers’ Compensation Claim, based on a positive drug test result. A positive drug test may also make an employee ineligible for unemployment compensation. Employers wishing to leverage either of these benefits must voluntarily comply with very detailed program rules.
Does California authorize marijuana (THC) or cannabidiol (CBD) use?
Yes. California permits the personal adult use and the medical use of marijuana for patients that meet specific medical conditions. The laws do not specifically impact employment drug testing programs.
Can I be fired or lose a job offer in California if I fail a drug test?
In California, if you test positive on a drug test it can be grounds for termination or a rescinded job offer.
What are the medical and recreational marijuana-related rules in California?
In California, medical and recreational marijuana use is considered legal and cannot be used against you if you test positive, unless you are in a safety sensitive position.

Drug Testing Stats - California

Drug and Alcohol Abuse Statistics from California

Last Updated: March 1, 2024

  • In one year, the US spends 13.92% or $722.4 million on helping those who need help recovering from substance abuse while in residential treatment in California.
  • In California, there are 71 drug rehab facilities that provide free treatment for all clients.
  • In California, 69.10% of males who excessively drink alcohol died with alcohol being the cause of death.
  • In California, studies show that adults 35 and older who binge drink had a 86.10% percent of death rate due to alcohol related problems.
  • In 1 year, 129,153 people contracted HIV/AIDS in California due to intravenous drug use.
  • In California there were 56,406 registered employers in the FMCSA Clearinghouse and out of the 56,406 registered, there were 16,808 violations.

Substance Misuse in California

In California, substance misuse remains a consistent challenge. Statistics reveal that 16.60% of adults aged 18 and over partake in binge drinking once monthly or more frequently. The state experiences 6,198 deaths annually due to drug overdoses, with opioid overdoses alone claiming around 400 lives each year.

Expenses of Rehabilitation

Around 2,195 rehab centers are operational in California, but the financial burden is significant. Inpatient rehab, for instance, costs $56,654 per person, making it financially daunting for many. The typical expense for outpatient rehab services is around $1,703.


  1. The National Survey on Drug Use and Health (NSDUH), conducted annually by the Substance Abuse and Mental Health Services Administration (SAMHSA)
  2. Provisional Multiple Cause of Death database contains mortality and population for U.S. counties.
  3. Alcohol Use in the United States: Age Groups and Demographic Characteristics
  4. United States Department of Transportation - FMCSA Drug and Alcohol Clearinghouse - December 2023 Report

Drug Testing Services for California Employers

Keeping a drug- and alcohol-free workplace is vital to the success of your business and the safety of your employees. US Drug Test Centers helps keep your company drug-free in many ways.

  • We can conduct drug testing for a variety of controlled substances, including marijuana, cocaine, and PCP.

  • US Drug Test Centers offers drug screening for several purposes, including pre-employment drug tests, reasonable suspicion testing, random drug testing, post-accident drug testing, and return-to-duty drug testing. Random drug testing programs with consortium pools are offered to those smaller companies that need a DOT or PUC random drug testing program or consortium.

  • We'll carefully craft your drug testing policies so that both you and your employees understand expectations and rights. Companies should be cautious to minimize any disclosure to liability by having a complete drug-free workplace policy in place. US Drug Test Centers can establish a program for non-regulated or regulated companies including DOT and PUC regulations.

  • We can train your staff to help you manage your drug-free workplace, determine reasonable suspicion, order drug tests, and more.

Learn more about employee testing and services or place your order online.

Support for DOT Companies

US Drug Test Centers works with both the Department of Transportation (DOT) and non-DOT companies. The DOT has very strict rules when it comes to drug testing and maintaining a drug-free workplace. This is especially important for safety-sensitive industries and professionals who are concerned with public safety.

We'll ensure compliance with drug testing laws (both local California law and federal law) so that you can pass a DOT audit at any time.

Learn more about our DOT testing and services.

Airplane waiting on the tarmac

Drug Testing for Individuals

If you need a court-appointed drug test or pre-employment testing to secure a job offer, we can help you. Legal drug tests include child custody, DUI, and probation drug/alcohol testing.

Instant/POCT drug testing is offered at many of our locations with same-day negative results. Drug and alcohol test collection sites are located in many areas of California, including San Francisco, Sacramento, Los Angeles, San Diego, San Jose, Fresno, Sacramento, Long Beach, Oakland, Bakersfield, Stockton, Santa Ana, and Riverside. Please see below for a full list of our California testing centers.

Order your test online today.

Why Partner with Us?

Why work with us when it comes to all of your testing needs?


We only work with SAMHSA-certified laboratories. These labs are held to the strictest standards when it comes to their equipment and processes.

Additionally, all test results are verified by a medical review officer (MRO), who is a licensed physician. For instance, let's say an employee receives a positive drug test result but suspects it's due to their prescription medication. An MRO can confirm this.


We offer the widest variety of testing and panel options, including suboxone, methamphetamines, Rohypnol, ecstasy, heavy metals, barbiturates, and steroids. We can even screen for unknown substances if you suspect you've been poisoned but don't know with what.

US Drug Test Centers can screen for drugs via hair, urine, and breath.

And, as we discussed earlier, we offer testing for California employers and employees under a number of specific circumstances: pre-employment, random testing, etc.


We have more than 22,000 locations across the United States, so we're never more than a short drive away. Find a testing center near you.

You can order both instant drug testing — where negative results are returned the same day — and on-site mobile drug testing, where a collector will meet you (or your employee) within two hours to begin the screening process.

Order a Drug Test California Today

Recreational marijuana use continues to become more common. Our country has a scary opioid addiction. It's more important than ever to maintain a drug-free workplace and keep dangerous substances out of our families and communities.

Whether you need to test employees or your teenager, you've got employees in safety-sensitive positions, or you need pre-employment testing for job applicants and prospective employees, we're here to help while keeping you compliant with California drug testing laws.

Order your test online today or contact us with any questions.

Available Collection Types

US Drug Test Centers offers the full range of collection types, including urine, hair and breath samples, each with its own advantages and applications for accurate substance screening.

Legal Drug Testing

Legal drug testing is a critical procedure often mandated by employers, law enforcement agencies, and organizations to ensure compliance with regulations and maintain safety in various settings. US Drug Test Centers can help you with your testing needds.

DOT Testing Services

DOT Testing Services are specifically designed to meet the stringent drug and alcohol testing requirements mandated by the U.S. Department of Transportation (DOT) for safety-sensitive positions in the transportation industry, ensuring compliance and public safety.

Laboratory Testing Services

Looking for nationwide laboratory testing? US Drug Test Centers has partnered with eNational Testing to offer laboratory testing such as blood titers (MMR, Varicella, Hep B), QuantiFERON (TB Blood) Testing, Mens & Womens health panels, allergy testing and much more! You can simply order a health lab test or panel online 24/7 and go in for testing the same day at over 2,700 locations nationwide.

Scheduling your preventative health laboratory testing in California here.

Our Drug Testing Partners