Drug Screening Near Me - Redwood City, CA

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


39 Drug-Testing Centers in Redwood City

1400 Veterans Blvd Fl 10.96 miles

1400 Veterans Blvd Fl 1
Redwood City, CA 94063

170 Alameda De Las Pulgas1.00 miles

170 Alameda De Las Pulgas
Redwood City, CA 94062

1100 Laurel Street, Suite F1.37 miles

1100 Laurel Street, Suite F
San Carlos, CA 94070

125 Shoreway Rd Ste A2.81 miles

125 Shoreway Rd Ste A
San Carlos, CA 94070

222 W 39th Ave4.64 miles

222 W 39th Ave
San Mateo, CA 94403

300 Pasteur Dr4.76 miles

300 Pasteur Dr
Palo Alto, CA 94304

1098 Foster City Blvd, Ste 1024.85 miles

1098 Foster City Blvd, Ste 102
Foster City, CA 94404

795 El Camino Real5.04 miles

795 El Camino Real
Palo Alto, CA 94301

60 N El Camino Real7.72 miles

60 N El Camino Real
San Mateo, CA 94401

2290 W El Camino Real Ste 49.38 miles

2290 W El Camino Real Ste 4
Mountain View, CA 94040

1860 El Camino Real Ste 40010.65 miles

1860 El Camino Real Ste 400
Burlingame, CA 94010

35500 Dumbarton Ct11.00 miles

35500 Dumbarton Ct
Newark, CA 94560

1501 Trousdale Dr11.04 miles

1501 Trousdale Dr
Burlingame, CA 94010

1663 Rollins Rd11.18 miles

1663 Rollins Rd
Burlingame, CA 94010

3555 Whipple Rd11.83 miles

3555 Whipple Rd
Union City, CA 94587

2500 Grant Rd11.86 miles

2500 Grant Rd
Mountain View, CA 94040

573 W El Camino Real11.94 miles

573 W El Camino Real
Mountain View, CA 94040

29000 Hesperian Blvd12.16 miles

29000 Hesperian Blvd
Hayward, CA 94545

26250 Industrial Blvd Ste 3212.33 miles

26250 Industrial Blvd Ste 32
Hayward, CA 94545

33077 Alvarado Niles Rd12.96 miles

33077 Alvarado Niles Rd
Union City, CA 94587

27200 Calaroga Ave12.99 miles

27200 Calaroga Ave
Hayward, CA 94545

901 W El Camino Real13.17 miles

901 W El Camino Real
Sunnyvale, CA 94087

33560 Alvarado Niles Rd13.22 miles

33560 Alvarado Niles Rd
Union City, CA 94587

39180 Farwell Dr Ste 23113.48 miles

39180 Farwell Dr Ste 231
Fremont, CA 94538

877 W Fremont Avenue, Ste H-213.76 miles

877 W Fremont Avenue, Ste H-2
Sunnyvale, CA 94087

5763 Stevenson Blvd13.85 miles

5763 Stevenson Blvd
Newark, CA 94560

42650 Christy St14.12 miles

42650 Christy St
Fremont, CA 94538

801 Traeger Ave Ste 21214.19 miles

801 Traeger Ave Ste 212
San Bruno, CA 94066

2147 Mowry Ave Ste C114.82 miles

2147 Mowry Ave Ste C1
Fremont, CA 94538

3161 Walnut Ave14.85 miles

3161 Walnut Ave
Fremont, CA 94538

2000 Mowry Ave14.92 miles

2000 Mowry Ave
Fremont, CA 94538

3 S Linden Ave14.98 miles

3 S Linden Ave
South San Francisco, CA 94080

1195 E Arques Ave Bldg 114.98 miles

1195 E Arques Ave Bldg 1
Sunnyvale, CA 94085

10050 N Wolfe Rd Ste Sw1-19015.02 miles

10050 N Wolfe Rd Ste Sw1-190
Cupertino, CA 95014

10050 Bubb Rd Ste 315.14 miles

10050 Bubb Rd Ste 3
Cupertino, CA 95014

24326 Mission Blvd Ste 315.16 miles

24326 Mission Blvd Ste 3
Hayward, CA 94544

39400 Padeo Padre Pkwy Mission Bldg15.36 miles

39400 Padeo Padre Pkwy Mission Bldg
Fremont, CA 94538

556 Mowry Avenue, Suite 10315.51 miles

556 Mowry Avenue, Suite 103
Fremont, CA 94536

2587 Merced St15.55 miles

2587 Merced St
San Leandro, CA 94577

Nationwide Convenience

Find a drug screening near you in minutes. Our team will schedule your visit and email your authorization form right away, no walk-in confusion.

Trusted Results

Lab-based testing with MRO review available. Chain-of-custody and defensible documentation for employers, legal needs, and compliance.

Fast Turnaround

Rapid screens with same-day results options, plus confirmatory lab testing. Clear timelines and proactive status updates.

Drug Screening Services Near You

Urine Drug Screening

  • 5, 10, 12, 14 panel options
  • Lab-based & rapid screens
  • DOT and non-DOT

Hair Drug Screening

  • 90-day lookback
  • Observed collection
  • Work, court, personal

Oral Fluid Drug Screening

  • On-site friendly
  • Recent-use detection
  • DOT oral fluid coming soon

Specialty Screening Panels

  • Child Guard Exposure
  • Alcohol (EtG/EtS)
  • Custom employer panels

For Employers

  • Pre-employment, random, post-accident, and reasonable suspicion
  • DOT compliance (FMCSA, FAA, FRA, FTA, PHMSA, USCG)
  • Electronic CCF, consolidated reporting, and MRO review
Employer Solutions

For Individuals

  • Personal, court, probation, school, and athletic programs
  • Confidential ordering with clear instructions
  • Results delivered securely
Order a Screening


What Is a Urine Drug Screen?

An extensive examination of a urine sample known as a urine drug screen evaluates the presence of drugs and their metabolites. Prominently used across workplaces in Redwood City, CA and other regulated programs, it is preferred due to its non-invasiveity, economic feasibility, and capability to identify a wide spectrum of substances within a practical time frame.

  • Implementation with a strict chain of custody for regulated assessments.
  • Identifies parent drugs and/or their metabolites excreted in the urine.
  • Reflects prior drug exposure within a certain detection scope but does not indicate current impairment.

Why Organizations Use Urine Drug Screening

  • Screening prospective employees to ensure a safe and drug-free work environment, particularly in Redwood City, CA.
  • Conducting tests randomly, as well as after incidents, if there is reasonable suspicion, or before an employee returns to duty.
  • Ensures adherence to regulatory expectations in industries where safety is critical.
  • Monitoring whether prescribed medications or treatment regimens are being followed as expected.

How It Works

Collection

  • In Redwood City, CA, donors provide a urine sample in a secured container, with collection potentially observed or unobserved based on program guidelines.
  • Validation of the specimen might involve assessments of creatinine levels, specific gravity, and pH to ensure sample integrity.

Testing Methodology

Interpreting Results

  • The initial stage within Redwood City, CA's testing framework involves using an immunoassay screen for a swift and economical evaluation of samples.

  • For samples that return presumptive positive results, confirmatory testing using methods like GC/MS or LC/MS/MS is conducted to verify findings.

  • The outcomes are classified as positive or negative based on the present cutoff concentrations measured in nanograms per milliliter (ng/mL).

Detection Windows

In Redwood City, CA, the detection of drugs in urine can vary based on several factors including the type of substance, frequency of usage, individual's metabolism, hydration level, body composition, and the sensitivity of the testing method. Generally, the majority of drugs can be detected within one to three days. However, substances like cannabinoids in cases of habitual use might remain detectable for longer periods.

Key Considerations for Redwood City, CA and regulated (e.g., DOT) programs

  • Ensure compliance with relevant federal regulations and utilize certified laboratories.
  • Employ collectors who are well-trained and qualified, maintain a strict chain-of-custody for reliability.
  • Incorporate specimen validity testing to protect against tampering or adulteration.
  • Whenever necessary, obtain a review of results from a qualified Medical Review Officer (MRO).
  • Maintain comprehensive documentation, keep records, and outline clear follow-up protocols for handling positive results.

Benefits and Limitations

Benefits

  • In Redwood City, CA, this method becomes widely favored due to its economic viability and broad-spectrum applicability for detecting a multitude of substances.
  • Presents an effective timeframe that aligns well with the needs of workplace drug monitoring.

Limitations

  • In Redwood City, CA, this testing method does not measure real-time substance impairment.
  • Potential exists for false positive or false negative results unless verified through confirmatory testing.
  • Instances of very recent use could remain undetected if they fall outside the typical detection window.

Best Practices for Implementation

  • Implement a clear policy detailing reasons for testing, substances to be screened, cutoff points, confidentiality assurances, and consequences.
  • Embrace a dual-phase approach: initial screening followed by confirmatory testing upon presumptive positivity.
  • Conduct thorough educational sessions with employees and donors about testing protocols and expectations.
  • Monitor positive test trends to inform safety measures and wellness strategies within Redwood City, CA workplaces.
  • Partner with reputable collection facilities and laboratories accredited by relevant authorities.

Summary

In the state of Redwood City, CA, employing urine drug screening tests as a core preventive measure supports safety, regulatory compliance, and managerial risk assessment. Using standard procedures, maintaining chain-of-custody integrity, performing confirmatory testing, and involving trained reviewers, organizations can effectively monitor prior substance exposure, promoting a safe and productive organizational environment.





What Is a Hair Drug Screen?

In Redwood City, CA, hair drug testing offers a detailed analysis by assessing a small sample of hair for traces of drugs and their metabolites that have diffused into the bloodstream and accumulated in the hair shaft. Given that hair grows at a slow rate and retains drug metabolites over an extended period, it presents one of the utmost elongated detection windows among existing testing methodologies, ideal for recognizing ongoing or prolonged substance usage.

  • The typical collection involves 100–120 strands taken close to the scalp, usually around 1.5 inches in length.
  • This sample represents up to a 90-day detection period, contingent on hair growth.
  • The method allows comprehensive testing for a variety of substances, including amphetamines, opioids, cocaine, marijuana, and PCP.

Why Organizations Use Hair Drug Screening

  • In Redwood City, CA, hair tests are performed during pre-employment to identify sustained substance use habits.
  • Utilized for random or regular tests in industries with high safety standards.
  • Applied in monitoring for adherence to treatment or legal requirements.
  • Helps confirm abstinence or compliance with company drug-free policies.

How It Works

Collection

  • A trained collector carefully removes a small sample (usually from near the crown) under strict chain-of-custody procedures in Redwood City, CA.
  • Once collected, this sample is securely sealed, appropriately labeled, and sent off to a certified laboratory for analysis.
  • In cases where scalp hair is insufficient, alternative collection sites, such as body hair, may be considered for sampling.

Testing Methodology

  • To eliminate external contamination, all hair samples in Redwood City, CA undergo washing and preparation.

  • An initial screening relies on immunoassay technology to identify drug classes.

  • Samples that yield positive results are confirmed through GC/MS or LC/MS/MS for accurate identification.

  • Cutoff levels are set in nanograms per milligram (ng/mg), adhering to SAMHSA and lab standards.

Interpreting Results

  • Negative: In Redwood City, CA, no drugs or metabolites are detected above the laboratory cutoff level in the sample.
  • Positive: Detected drugs or metabolites are confirmed through secondary testing in Redwood City, CA agencies.
  • Inconclusive/Rejected: Insufficient sampling or contamination necessitates recollection in Redwood City, CA.

Detection Windows

Offering the most extended detection window among all testing methods available in Redwood City, CA, a standard 1.5-inch hair sample signifies roughly 90 days of potential drug exposure. Extended hair samples can increase this window, subject to growth rate (roughly 0.5 inches per month). Unlike other tests like urine or oral fluid, hair analysis cannot detect the most recent drug use (typically within 7–10 days).

Key Considerations for Regulated and Non-Regulated Testing

  • Though DOT regulations do not currently mandate hair testing, ongoing assessments by the Department of Transportation and HHS might lead to future adoption of these guidelines.
  • For non-DOT initiatives, hair testing is widely recognized as an efficient long-term detection tool.
  • Trained professionals should execute every collection under documented chain-of-custody practice.
  • Labs must possess SAMHSA or CAP/CLIA certification to ensure precision and reliability.

Benefits

  • The extended spike detection window, reaching up to 90 days or longer, is a significant advantage in Redwood City, CA.
  • It's extremely challenging to tamper with or substitute a hair sample compared to urine specimens.
  • Reflects consistent and habitual usage patterns over time.
  • Collection is straightforward, non-intrusive, and requires no special facilities such as restrooms.

Limitations

Best Practices for Implementation

Summary

Hair drug screening emerges as a robust and trusted methodology for identifying long-term drug use, making it an ideal option for employers, legal bodies, and treatment programs seeking comprehensive insight into someone's substance use history. Performed by trained collectors and analyzed by certified laboratories, hair testing assures defensible and tamper-resistant results that are pivotal in sustaining integrity and safety within Redwood City, CA workplaces and beyond.

Redwood City Drug Testing

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

Redwood City DOT Drug Testing

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

Redwood City DNA Testing

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

Redwood City Industry Training

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

Redwood City Hair Drug Testing

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

Redwood City Alcohol Testing

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

Redwood City Drug Testing Services

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

Redwood City 5 Panel Drug Test

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

Redwood City 10 Panel Drug Test

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

Redwood City On Site Drug Testing

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

Redwood City DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Redwood City, 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

How do I schedule a drug test?

You can order online or call 800-221-4291 for same-day scheduling. After payment, an authorization form is emailed immediately for use at any of our 17,000+ testing centers.

What types of drug tests do you offer?

Accredited Drug Testing provides urine, hair, oral fluid, and specialty panels such as EtG alcohol and exposure testing. Both DOT and non-DOT testing options are available nationwide.

Are your drug tests DOT compliant?

Yes. DOT testing follows 49 CFR Part 40, using SAMHSA-certified labs, qualified collectors, strict chain-of-custody, and MRO review for all regulated modes (FMCSA, FAA, FRA, FTA, PHMSA, USCG).

When will I receive my results?

Rapid tests often provide same-day results. Lab-based testing typically reports within 24–72 hours after specimen collection and laboratory analysis.

Is my information confidential?

Yes. All results are handled in accordance with HIPAA and DOT privacy requirements. Accredited Drug Testing never shares personal data without consent or legal obligation.

Do you provide testing for individuals as well as employers?

Absolutely. We support workplace programs, legal and probation requirements, schools, athletics, and private personal testing needs across the United States.

(800) 221-4291