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

Drug Testing Locations in Castro Valley, CA

With 38 testing centers in the Castro Valley 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

38 Drug-Testing Centers in Castro Valley

Same-Day Electronic Donor Pass Accepted at All Locations Below

Minutes Away, Test Today

20400 Lake Chabot Rd Ste 101,

0.15 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
20400 Lake Chabot Rd Ste 101,
Castro Valley, CA 94546

24326 Mission Blvd Ste 3

2.10 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
24326 Mission Blvd Ste 3
Hayward, CA 94544

13939 E 14th St

3.27 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
13939 E 14th St
San Leandro, CA 94578

27200 Calaroga Ave

4.23 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
27200 Calaroga Ave
Hayward, CA 94545

26250 Industrial Blvd Ste 32

4.41 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
26250 Industrial Blvd Ste 32
Hayward, CA 94545

2587 Merced St

4.49 mi
🕑 Testing Hours: Mon–Fri: 7:00 AM-6:00 PM✓ Walk-in with Electronic Donor Pass
2587 Merced St
San Leandro, CA 94577

29000 Hesperian Blvd

5.42 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
29000 Hesperian Blvd
Hayward, CA 94545

1555 Doolittle Dr Ste 180

5.50 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1555 Doolittle Dr Ste 180
San Leandro, CA 94577

3555 Whipple Rd

6.10 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3555 Whipple Rd
Union City, CA 94587

7901 Oakport St Ste 4950 2nd Floor

7.03 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
7901 Oakport St Ste 4950 2nd Floor
Oakland, CA 94621

7817 Oakport St

7.09 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
7817 Oakport St
Oakland, CA 94621

401 Roland Way Ste 205

7.26 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
401 Roland Way Ste 205
Oakland, CA 94621

33077 Alvarado Niles Rd

7.37 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
33077 Alvarado Niles Rd
Union City, CA 94587

33560 Alvarado Niles Rd

7.63 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
33560 Alvarado Niles Rd
Union City, CA 94587

7667 Amador Valley Blvd

8.40 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
7667 Amador Valley Blvd
Dublin, CA 94568

5720 Stoneridge Mall Road, Suite 110

8.49 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
5720 Stoneridge Mall Road, Suite 110
Pleasanton, CA 94588

2301 Camino Ramon Ste 108

8.69 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2301 Camino Ramon Ste 108
San Ramon, CA 94583

7601 Stoneridge Dr Fl 1

8.81 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
7601 Stoneridge Dr Fl 1
Pleasanton, CA 94588

5601 Norris Canyon Rd Ste 140

8.91 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
5601 Norris Canyon Rd Ste 140
San Ramon, CA 94583

6001 Norris Canyon Rd Ste 142

8.91 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
6001 Norris Canyon Rd Ste 142
San Ramon, CA 94583

2421 Encinal Ave Ste A

9.79 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2421 Encinal Ave Ste A
Alameda, CA 94501

4847 Hopyard Rd Ste 4-424

10.01 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
4847 Hopyard Rd Ste 4-424
Pleasanton, CA 94588

2111 Whitehall Place, Suite D

10.23 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2111 Whitehall Place, Suite D
Alameda, CA 94501

35500 Dumbarton Ct

10.26 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
35500 Dumbarton Ct
Newark, CA 94560

5635 W Las Positas Blvd

10.74 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
5635 W Las Positas Blvd
Pleasanton, CA 94588

556 Mowry Avenue, Suite 103

10.75 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
556 Mowry Avenue, Suite 103
Fremont, CA 94536

2000 Mowry Ave

11.00 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2000 Mowry Ave
Fremont, CA 94538

2147 Mowry Ave Ste C1

11.01 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2147 Mowry Ave Ste C1
Fremont, CA 94538

3128 Santa Rita Rd

11.38 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3128 Santa Rita Rd
Pleasanton, CA 94566

3161 Walnut Ave

11.50 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-10:00 PM • Sat: 9:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
3161 Walnut Ave
Fremont, CA 94538

2324 Santa Rita Rd Ste 4

11.55 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2324 Santa Rita Rd Ste 4
Pleasanton, CA 94566

2224 Delucchi Dr

11.73 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2224 Delucchi Dr
Pleasanton, CA 94588

4000 Dublin Blvd Ste 150

11.92 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
4000 Dublin Blvd Ste 150
Dublin, CA 94568

39180 Farwell Dr Ste 231

12.23 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
39180 Farwell Dr Ste 231
Fremont, CA 94538

3200 Busch Rd

12.29 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3200 Busch Rd
Pleasanton, CA 94566

1517 Grand Ave

12.39 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1517 Grand Ave
Piedmont, CA 94611

384 Embarcadero W

12.45 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
384 Embarcadero W
Oakland, CA 94607

1700 Broadway Ste 310

12.69 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1700 Broadway Ste 310
Oakland, CA 94612

Employment, DOT, Court Ordered, Probation, Family

Accredited Drug Testing provides a full range of drug and alcohol testing services at 38 facilities around Castro Valley, California. We administer both DOT and non-DOT urine drug screens, breath alcohol examinations, EtG alcohol assessments, and hair follicle drug analyses tailored for personal, occupational, and legal purposes. Situated in Castro Valley, CA, we offer expedited results and SAMSA certified lab evaluations. Our same-day service is convenient with most locations just a short distance from your residence or workplace. We also provide Occupational Health Assessments, Clinical Testing, and Background Evaluations.

Contact us at (800) 221-4291 or register via our website. Pick your test type and the nearest center—services are open for personal, employee-based, or third-party testing. Setting up a test is Simple and Swift; reach our scheduling team or book your test online anytime. Our seamless system makes arranging drug testing in Castro Valley a hassle-free task.

* 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 Castro Valley, CA

1

Order Online or Call

Select your test & search nearby Castro Valley 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.

Castro Valley, CA Drug Testing

Drug Testing Services Available at Our Castro Valley, CA Labs:

At our Castro Valley 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 Castro Valley

SAMHSA Certified • MRO Verified

Accredited Drug Testing provides employer and individual screening in Castro Valley, 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 Castro Valley 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 Castro Valley, 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 Castro Valley 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 Castro Valley, CA

Minutes Away, Same-Day Donor Pass

Accredited Drug Testing operates collection centers strategically positioned throughout Castro Valley 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 Castro Valley Neighborhoods Covered:

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

Major Employment & Commercial Hubs Served:

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

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

Surrounding Areas Served Near Castro Valley

Cherryland • Ashland • Hayward • Fairview • San Lorenzo • Norris Canyon • Russell City • San Leandro

Castro Valley, 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 Castro Valley.

Test Type & Local Panel Detection Window Common Use Cases in Castro Valley Turnaround Time
5-Panel Urine Screen in Castro Valley →
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 Castro Valley →
Adds Benzodiazepines, Barbiturates, Methadone, Propoxyphene
1 to 7 Days Healthcare Staffing, Corporate Policies & Court Orders 24 to 48 Hours
Hair Follicle Drug Test in Castro Valley →
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 Castro Valley →
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 Castro Valley →
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 Castro Valley →
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 Castro Valley, 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 Castro Valley.

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 Castro Valley facility or job site for groups of 25+ employees.

Local Testing Resource Network

More Drug & Alcohol Testing Options in Castro Valley, CA

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

Castro Valley Drug Testing

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

Castro Valley DOT Drug Testing

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

Castro Valley DNA Testing

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

Castro Valley Industry Training

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

Castro Valley Hair Drug Testing

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

Castro Valley Alcohol Testing

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

Castro Valley Drug Testing Services

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

Castro Valley 5 Panel Drug Test

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

Castro Valley 10 Panel Drug Test

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

Castro Valley On Site Drug Testing

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

Castro Valley DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Castro Valley, 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 38 certified collection sites in the Castro Valley area, offering urine, hair follicle, breath alcohol, and DOT testing.
While walk-ins are welcome with an electronic donor pass at collection sites across Castro Valley, 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

Excellent service!

Excellent service! Trish went above and beyond to find me a testing site as close to my home as possible. Results were faster than expected, as well. Thanks for your help, Trish and Accredited!

Es Hache - 4/13/2025

Reception is kind and helpful

Reception is kind and helpful , everything quick and simple , best urgent care

Yusuf Narmuradov - 11/19/2024

Fast and efficient service

Fast and efficient service for employers wanting to do pre employment drug screening that meets DOT requirements!!

Mary Thomas - 4/5/2025


(800) 221-4291