✓ Same-Day Walk-Ins Welcome ✓ Digital Donor Pass in Minutes ✓ No Doctor Order Required ✓ SAMHSA-Certified Labs

Drug Testing Locations in Clearlake, CA

With 40 testing centers in the Clearlake area, we offer drug and alcohol testing for employment, probation and DOT requirements. Additional services include DOT consortium enrollment, DNA Testing and background checks. Order your tests and services online or call (800) 221-4291.

Urine (5, 10, 12, 14-Panel) Hair Follicle (90-Day) DOT Drug & Alcohol Court & Probation Oral Fluid / Saliva EtG Alcohol
🕑 Collection Site Hours: Monday – Friday: 8:00 AM – 4:00 PM • ✓ Walk-in with Electronic Donor Pass • Saturday – Sunday: Closed

40 Drug-Testing Centers in Clearlake

Same-Day Electronic Donor Pass Accepted at All Locations Below

Minutes Away, Test Today

16320 Tish A Tang Rd

2.59 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
16320 Tish A Tang Rd
Lower Lake, CA 95457

2559 Lakeshore Blvd Ste 4

17.05 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2559 Lakeshore Blvd Ste 4
Lakeport, CA 95453

5176 Hill Rd E Attn Lab

17.95 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
5176 Hill Rd E Attn Lab
Lakeport, CA 95453

5124 Hill Rd E,

18.20 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
5124 Hill Rd E,
Lakeport, CA 95453

1375 University St

26.22 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1375 University St
Healdsburg, CA 95448

421 March Ave, Ste C

26.31 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
421 March Ave, Ste C
Healdsburg, CA 95448

10 Woodland Rd

29.70 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
10 Woodland Rd
Saint Helena, CA 94574

8465 Old Redwood Hwy Ste 400

30.17 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
8465 Old Redwood Hwy Ste 400
Windsor, CA 95492

3650 Westwind Blvd Po Box 5680

32.15 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3650 Westwind Blvd Po Box 5680
Santa Rosa, CA 95403

417 Talmage Rd Ste E

33.22 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
417 Talmage Rd Ste E
Ukiah, CA 95482

3975 Old Redwood Hwy Ste 152

33.28 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3975 Old Redwood Hwy Ste 152
Santa Rosa, CA 95403

232b Hospital Dr

33.76 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
232b Hospital Dr
Ukiah, CA 95482

20 Elaine Dr

34.20 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
20 Elaine Dr
Santa Rosa, CA 95409

1221 N Dutton Ave

35.51 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
1221 N Dutton Ave
Santa Rosa, CA 95401

349 College Ave

35.77 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
349 College Ave
Santa Rosa, CA 95401

1111 Sonoma Ave Ste 121

35.89 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1111 Sonoma Ave Ste 121
Santa Rosa, CA 95405

1287 Fulton Rd

36.00 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1287 Fulton Rd
Santa Rosa, CA 95401

990 Sonoma Ave,

36.02 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
990 Sonoma Ave,
Santa Rosa, CA 95404

1252 Airport Park Blvd Ste C5

36.09 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1252 Airport Park Blvd Ste C5
Ukiah, CA 95482

2967 Davison Ct

37.30 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2967 Davison Ct
Colusa, CA 95932

Overer Markt 1 Speichersdorg

37.62 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
Overer Markt 1 Speichersdorg
Germany, KS 95469

151 E Webster St

37.70 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
151 E Webster St
Colusa, CA 95932

6800 Palm Avenue, Suite G

40.17 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
6800 Palm Avenue, Suite G
Sebastopol, CA 95472

652 Petaluma Ave Ste C

40.19 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
652 Petaluma Ave Ste C
Sebastopol, CA 95472

5900 State Farm Dr

42.00 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
5900 State Farm Dr
Rohnert Park, CA 94928

6174 State Farm Dr

42.18 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
6174 State Farm Dr
Rohnert Park, CA 94928

1370 Medical Center Dr Ste B

42.29 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1370 Medical Center Dr Ste B
Rohnert Park, CA 94928

6025 Labath Ave Ste 104

42.29 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
6025 Labath Ave Ste 104
Rohnert Park, CA 94928

460 W Sycamore St

45.07 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
460 W Sycamore St
Willows, CA 95988

347 Andrieux St

47.09 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
347 Andrieux St
Sonoma, CA 95476

3435 Valle Verde Dr Ste B

47.10 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3435 Valle Verde Dr Ste B
Napa, CA 94558

3285 Claremont Way Fl 2

47.31 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3285 Claremont Way Fl 2
Napa, CA 94558

1000 Trancas St

47.33 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1000 Trancas St
Napa, CA 94558

3260 Beard Road, Suite A

47.42 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3260 Beard Road, Suite A
Napa, CA 94558

1550 Professional Drive, Suite B

48.52 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1550 Professional Drive, Suite B
Petaluma, CA 94954

400 N Mcdowell Blvd

48.71 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
400 N Mcdowell Blvd
Petaluma, CA 94954

151 Lynch Creek Way

48.80 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
151 Lynch Creek Way
Petaluma, CA 94954

153 Lynch Creek Way

48.83 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
153 Lynch Creek Way
Petaluma, CA 94954

520 Cottonwood Street, Suite F

48.89 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
520 Cottonwood Street, Suite F
Woodland, CA 95695

632 W Gibson Rd

49.22 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
632 W Gibson Rd
Woodland, CA 95695

Employment, DOT, Court Ordered, Probation, Family

Accredited Drug Testing provides thorough drug and alcohol testing services at 40 centers in Clearlake, California. Our offerings include DOT and non-DOT urine tests, breathalyzer tests, EtG alcohol assessments, and hair follicle drug checks catering to individual, employment, and legal purposes. We feature quick result testing and SAMSA-certified lab analyses directly in Clearlake, CA. With same-day service, most testing locations are swiftly accessible from your home or workplace. Additional services cover Occupational Health Testing, Clinical Testing, and Background Checks.

Dial (800) 221-4291 or register online. Just pick your desired test and opt for a nearby site—options are available for individual, employee, or third-party testing. Setting up a test is quick and simple; connect with our scheduling team or book your test anytime, 24/7, online. Our efficient and intuitive system enables easy arrangement of drug testing near Clearlake.

* 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.

How the Drug Testing Process Works in Clearlake, CA

1

Order Online or Call

Select your test & search nearby Clearlake collection sites.

2

Get Donor Pass

Receive your donor pass by email or SMS immediately.

3

Visit Collection Center

Walk in with donor pass & photo ID. No appointment needed.

4

Fast Results

Secure results delivered confidentially in 24-48 hours.

Clearlake, CA Drug Testing

Drug Testing Services Available at Our Clearlake, CA Labs:

At our Clearlake 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.

Official Legal & Regulatory Framework

California Drug Testing Laws & Compliance in Clearlake

SAMHSA Certified • MRO Verified

Accredited Drug Testing provides employer and individual screening in Clearlake, CA adhering strictly to Cal. Lab. Code § 1025 et seq., federal DOT 49 CFR Part 40 guidelines, and certified SAMHSA laboratory chain-of-custody standards.

Statutory Citation
Cal. Lab. Code § 1025 et seq.
Medical Marijuana
Legal
Recreational Cannabis
Legal
Workplace Rights
Zero-Tolerance Protected

California AB 2188 requires non-psychoactive cannabis metabolite protections while retaining full employer rights for pre-employment, post-accident, and safety-sensitive testing.

Under Cal. Lab. Code § 1025 et seq., employers in Clearlake may institute comprehensive drug-free workplace programs including:

  • Pre-Employment Screening: Conditional job offer testing for all applicants.
  • Reasonable Suspicion Testing: Objective, documented behavioral signs of impairment.
  • Post-Accident Testing: Mandatory screening following workplace injuries or property damage.
  • Random Testing: Unannounced selection for safety-sensitive roles and machinery operators.
  • Workers' Comp Incentives: Verified testing programs provide premium discounts on state workers' compensation insurance policies.

While cannabis statutes continue evolving across the United States (Medical: Legal; Recreational: Legal in California), employers retain the legal prerogative to prohibit substance impairment on job premises, during operational shifts, and while operating company vehicles.

Federal regulations, Department of Transportation (DOT) mandates, and safety-sensitive positions strictly prohibit marijuana use regardless of state cannabis status. ADT provides both standard THC screening and non-THC customized drug panels for private employers wishing to adapt to state-specific hiring preferences.

For commercial drivers, maritime operators, aviation crews, and transit personnel operating in Clearlake, all testing follows rigorous Department of Transportation (DOT) standards governed by 49 CFR Part 40:

  • Federal 5-Panel Regulated Urine Screen: Tested for Marijuana, Cocaine, Amphetamines/Methamphetamines, Opioids (Codeine, Morphine, Heroin, Hydrocodone, Hydromorphone, Oxycodone, Oxymorphone), and PCP.
  • SAMHSA Accredited Laboratories: Zero compromise on testing accuracy with gas chromatography/mass spectrometry (GC/MS) confirmation.
  • Medical Review Officer (MRO): Every non-negative specimen is reviewed by a licensed physician MRO before reporting.
  • FMCSA Clearinghouse Reporting: Real-time reporting of verified positive tests and refusals to test into the federal driver clearinghouse database.

Accredited Drug Testing provides legally admissible drug and alcohol screening for county court dockets, child custody hearings, probation requirements, and pretrial diversion programs throughout Clearlake and California.

All specimens undergo observed or witnessed collection procedures when ordered by the court, accompanied by rigorous Federal Chain of Custody Forms (CCF). Turnaround time is rapid, and official certificates of analysis can be forwarded directly to your attorney, court case officer, or probation supervisor upon release.

Hyper-Local Proximity Coverage

Neighborhoods & Service Districts in Clearlake, CA

Minutes Away, Same-Day Donor Pass

Accredited Drug Testing operates collection centers strategically positioned throughout Clearlake to ensure fast donor access with minimal drive times. Walk-ins are welcomed with an immediate electronic donor pass across all major neighborhoods and transit corridors:

Key Clearlake Neighborhoods Covered:

● Downtown Clearlake ● Central Business District ● North Clearlake Commercial Corridor ● South Clearlake Industrial Park ● East Clearlake Metro Area ● West Clearlake Trade Center ● Medical & Healthcare District ● Airport / Logistics Corridor

Major Employment & Commercial Hubs Served:

Clearlake Main Street Commercial District • Clearlake Regional Trade Center • County Industrial Parkway • Metro Healthcare & Occupational Medical Corridor

Located anywhere in Clearlake? Receive your electronic pass in under 5 minutes.
Order Test Online →

Surrounding Areas Served Near Clearlake

Lower Lake • Clearlake Riviera • Clearlake Oaks • Soda Bay • Hobergs • Hidden Valley Lake • Kelseyville • Middletown

Clearlake, CA Drug & Alcohol Test Panels & Detection Windows

Select a test panel below to review specific drug compounds screened, detection timeframes, and instant electronic pass registration in Clearlake.

Test Type & Local Panel Detection Window Common Use Cases in Clearlake Turnaround Time
5-Panel Urine Screen in Clearlake →
THC, Cocaine, Basic Opiates, Amphetamines, PCP
1 to 5 Days Pre-Employment, Workplace Safety & Non-DOT Randoms 24 to 48 Hours
10-Panel Urine Screen in Clearlake →
Adds Benzodiazepines, Barbiturates, Methadone, Propoxyphene
1 to 7 Days Healthcare Staffing, Corporate Policies & Court Orders 24 to 48 Hours
Hair Follicle Drug Test in Clearlake →
Long-term historical pattern analysis (90-day window)
Up to 90 Days Child Custody, Legal Defense & Executive Screening 3 to 5 Business Days
DOT Drug & Alcohol Test in Clearlake →
49 CFR Part 40 compliant with CCF & MRO verification
1 to 5 Days FMCSA, FAA, FRA, FTA, USCG Regulated Drivers & Crew 24 to 48 Hours
ETG & Breath Alcohol in Clearlake →
Evidential breath testing or 80-hour urine EtG metabolite
Breath: 0–12 Hrs
EtG: Up to 80 Hrs
Zero-Tolerance Workplace, Post-Accident & Probation Immediate to 48 Hours
DOT Physical Exam in Clearlake →
FMCSA NRCME certified medical examiner card (Form MCSA-5876)
1 to 2 Year Card Commercial Driver License (CDL) Medical Certification Same-Day Medical Card
Full-Service Testing Solutions

Occupational Health & Specialized Screening in Clearlake, CA

Beyond standard urine screening, Accredited Drug Testing delivers end-to-end occupational medical solutions, DOT credentialing, court-admissible forensic testing, and employer background compliance.

NRCME Certified

DOT Physicals & Medical Cards

FMCSA-compliant examinations conducted by certified medical examiners. Instant driver medical certificate renewal across Clearlake.

AABB Accredited

Court Legal DNA & Paternity

100% court-admissible legal paternity, maternity, sibling, and grandparentage testing with strict chain of custody for family court.

FCRA Compliant

Background Checks & MVR

Comprehensive pre-employment screening, nationwide criminal history searches, and Motor Vehicle Records (MVR) for driver compliance.

Long Detection Window

90-Day Hair Follicle Drug Test

Tamper-resistant 90-day historical substance screening. Preferred by family courts, custody attorneys, and zero-tolerance employers.

Instant & Lab Confirmed

Breath Alcohol & 80-Hr EtG

Evidential breath alcohol testing (BAT) and 80-hour EtG urine/hair metabolite analysis for probation monitoring and workplace safety.

We Come to You

Mobile On-Site Group Testing

Certified mobile collection technicians dispatched directly to your Clearlake facility or job site for groups of 25+ employees.

Local Testing Resource Network

More Drug & Alcohol Testing Options in Clearlake, CA

Need immediate walk-in service in Clearlake? View our Walk-In Drug Testing Near Me in Clearlake, CA facility guide or order an instant electronic donor pass online.

Clearlake Drug Testing

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

Clearlake DOT Drug Testing

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

Clearlake DNA Testing

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

Clearlake Industry Training

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

Clearlake Hair Drug Testing

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

Clearlake Alcohol Testing

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

Clearlake Drug Testing Services

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

Clearlake 5 Panel Drug Test

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

Clearlake 10 Panel Drug Test

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

Clearlake On Site Drug Testing

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

Clearlake DOT Physicals

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

In California, workplace drug testing is governed by statutory guidelines under Cal. Lab. Code § 1025 et seq.. Private employers generally operate under a Labor Code § 1025 and AB 2188 guidelines, permitting pre-employment, random, post-accident, and reasonable suspicion testing.
Yes. Employers in California who implement a certified Drug-Free Workplace Program in compliance with Cal. Lab. Code § 1025 et seq. can qualify for insurance premium discounts and enhanced legal protections during workers' compensation claims.
Under California state law compliance standards, state statutes prohibits adverse action for off-duty non-psychoactive cannabis use. Safety-sensitive positions, DOT-regulated roles, and federal contract compliance remain strictly zero-tolerance across all jurisdictions.
Accredited Drug Testing provides access to 40 certified collection sites in the Clearlake area, offering urine, hair follicle, breath alcohol, and DOT testing.
While walk-ins are welcome with an electronic donor pass at collection sites across Clearlake, registering your test online or calling (800) 221-4291 prior to visiting guarantees rapid priority specimen collection with an instant barcode pass.
Negative drug and alcohol test results are typically released within 24 to 48 hours of specimen processing. Any non-negative screenings undergo confirmatory GC/MS or LC/MS testing and licensed Medical Review Officer (MRO) verification within 3 to 5 business days.

Customer Reviews

Fantastic Experience

Fantastic experience from the beginning. Jocelyn was very helpful to me as someone who doesn’t have much experience in needing a test. They were very helpful and walked me through the entire process start to finish. Thank you ADT!

Riley Wilson - 2/18/2025

Smooth and Seamless

I use their service for new hire and DOT employee's. Spoke with Taisha Walker this morning, and she was very helpful. She made the process smooth and seamless.

Christina Galdos - 3/9/2025

Pretty Straightforward

It was a pretty straightforward process getting an appointment and making payment. Getting to the testing site was quick. I was in and out in no time.

Sadiat Ogunyemi - 12/19/2024

ADT is truly the best

Where do I start?!! ADT is truly the best!! I had the pleasure of speaking with Tori today! She was excellent, professional and truly went above and beyond in her kind, compassionate care and commitment to providing me with the best service possible. I was in such a time crunch, but I was able to call, order the test, pay for it over the phone and get the test I needed within the hour. Not only did this put my mind at ease, they saved my job!! I am forever grateful for this team of hard workers, that care, with such great work ethics! Thank you from the very bottom of my heart!!! If you need a drug, alcohol, etc… screening, this team will be your lifesavers!!

Sarah Patterson - 4/8/2025

they have made my job much easier

I always have a good experience setting up company driver drug screens through ADT. I'm really happy I found them while searching online, they have made my job much easier.

Exodus Heath - 2/13/2025

Super Helpful

Detricia was super helpful in making sure that the drug test is sent my worker for was the right one I needed for my company to be compliant with my customers drug test requirements.

Kevin Howell - 12/19/2024

Everything was great

Everything was great, the staff was very polite. Thank you.

Olga Petrova - 9/19/2024

Super Easy!

Super easy to set up an appointment through the phone. They walked me through all the steps and found me a location right near my house. Would definitely recommend!

Aldita Lumaj - 1/17/2025

Super helpful

Customer service was surprisingly super helpful and so nice. She was able to get me in at a local location right away the same day. She helped me figure out exactly what I needed. Very impressed.

Brook - 9/19/2024

test was quick and easy

Company New Hire Employee Process for DOT Drug test was quick and easy. No need to make appt. All employee had to do is show prepaid qr code I sent to employee show ID and was set. Would Recommend.

Maria Lopez - 11/19/2024


(800) 221-4291