Hair Follicle Drug Testing - Kent, WA

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

With 29 testing centers in the Kent 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.

29 Hair Drug Testing Centers in Kent

Minutes Away, Test Today

222 State Ave N

0.27 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
222 State Ave N
Kent, WA 98032

128 Washington Ave N

0.58 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
128 Washington Ave N
Kent, WA 98032

18012 W Valley Hwy Ste 101

0.88 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
18012 W Valley Hwy Ste 101
Kent, WA 98032

24031 104th Ave Se

1.57 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
24031 104th Ave Se
Kent, WA 98030

6642 S 193rd Pl Ste N107

3.37 mi
🕑 Testing Hours: M-Th 9:00 AM-6:00 PM • F 9:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
6642 S 193rd Pl Ste N107
Kent, WA 98032

19032 62nd Ave S

3.62 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
19032 62nd Ave S
Kent, WA 98032

1412 Sw 43rd Street, Suite 101

4.19 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1412 Sw 43rd Street, Suite 101
Renton, WA 98057

400 S 43rd St

4.28 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
400 S 43rd St
Renton, WA 98055

2529 S 194th St

4.49 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2529 S 194th St
Seatac, WA 98188

3600 Lind Ave Sw Ste 170

4.70 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
3600 Lind Ave Sw Ste 170
Renton, WA 98057

17709 108th Ave Se

4.75 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
17709 108th Ave Se
Renton, WA 98055

202 N Division St

4.97 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
202 N Division St
Auburn, WA 98001

1 E Main St Ste 130

5.07 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
1 E Main St Ste 130
Auburn, WA 98002

230 Auburn Way S Ste B

5.23 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
230 Auburn Way S Ste B
Auburn, WA 98002

202 Cross St Se

5.30 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
202 Cross St Se
Auburn, WA 98002

200 Andover Park E Ste 8

5.33 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
200 Andover Park E Ste 8
Tukwila, WA 98188

6720 Fort Dent Way Ste 110

5.91 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
6720 Fort Dent Way Ste 110
Tukwila, WA 98188

1300 S 320th St

5.93 mi
🕑 Testing Hours: Mon–Fri: 8:00 AM-5:00 PM✓ Walk-in with Electronic Donor Pass
1300 S 320th St
Federal Way, WA 98003

250 Sw 193rd Pl

5.99 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
250 Sw 193rd Pl
Normandy Park, WA 98166

720 S 320th Street, Suite B

6.15 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
720 S 320th Street, Suite B
Federal Way, WA 98003

304 Main Ave S Ste 202

6.97 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
304 Main Ave S Ste 202
Renton, WA 98057

33440 1st Way S Ste 103

7.07 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
33440 1st Way S Ste 103
Federal Way, WA 98003

15870 1st Ave S Ste 101

7.22 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
15870 1st Ave S Ste 101
Burien, WA 98148

34616 South 347th Place, Suite 2

7.26 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
34616 South 347th Place, Suite 2
Federal Way, WA 98003

15500 1st Ave S Ste 106a

7.39 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
15500 1st Ave S Ste 106a
Burien, WA 98148

13030 Military Rd S Ste 100

7.83 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
13030 Military Rd S Ste 100
Tukwila, WA 98168

12844 Military Rd S

7.97 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
12844 Military Rd S
Tukwila, WA 98168

2818 Sw 327th St

8.06 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
2818 Sw 327th St
Federal Way, WA 98023

502 54th Ave E

10.56 mi
🕑 Mon–Fri: 8:00 AM – 4:00 PM✓ Walk-in with Electronic Donor Pass
502 54th Ave E
Fife, WA 98424

Employment, Court Ordered, Probation, Family

Accredited Drug Testing provides comprehensive hair follicle drug assessments in Kent, Washington. At Accredited Drug Testing, we specialize in hair testing, with centers in cities nationwide that can conduct a hair test if you require a drug or alcohol analysis. Typically, 1.5 to 2 inches of hair from the crown or body is needed. Hair tests detect drugs, alcohol/ETG, or can be tailored to other needs.

Recently, the preference for drug testing methods has increasingly shifted towards hair follicle assessments. Employers, courts, and Substance Abuse specialists often prefer this over standard urine testing. Hair drug tests support zero-tolerance policies and are essential for courts and those on probation. The key advantage lies in its extended detection timeframe of up to 90 days, observed collection process, and minimal chance of tampering. However, for recent drug use within 5 days, urine tests remain most accurate.

What it is, How it works

Hair examinations are now recognized as a robust method for identifying drug and alcohol consumption. Hair retains a prolonged record of alcohol and drug usage by capturing biomarkers in the fibers of the hair as it grows. When hair is cut near the scalp, it can provide an approximate 3-month detection period for alcohol and drugs. Hair collection is straightforward, relatively tamper-proof, and easy to send.

A sample measuring 1.5 inches, comprising roughly 200 hair strands (equal to the size of a #2 pencil), located closest to the scalp, provides 100mg, the optimal quantity for analysis and confirmation. For EtG, add-ons, and/or tests exceeding 10 panels, a specimen of 150mg is advised. We suggest using a jeweler’s scale to measure specimen weight. If scalp hair is absent, a comparable amount of body hair can be gathered. When discussing head hair, we mean scalp hair specifically. Body hair encompasses all other hair types (facial, axillary, etc.).

Process Overview

The primary phases in the laboratory evaluation of a drug test are Accessioning, Screening, Extraction, and Confirmation.

During Accessioning, a sample is initially processed into a lab’s system. This includes confirming that the sample was properly sealed and sent, assigning a random LAN (Laboratory Accessioning Number), and finishing any supplementary data entry not covered by an electronic chain of custody.

Screening is a preliminary quick test for drug abuse. Though Screening is cost-effective for excluding drug use in numerous samples, a positive outcome requires confirmation for use in legal settings. Any samples that test presumptively positive during Screening necessitate additional confirmation.

When a sample tests presumptively positive in Screening, more hair is taken from the original specimen and readied for Extraction. In this phase, drugs are isolated from hair at a much lower concentration than other methods (e.g., urine or oral fluid), making hair drug testing one of the most intricate methods to conduct.

Verification of any positive screening is performed using GC/MS, GC/MS/MS, or LC/MS/MS. All presumptive positive samples are cleansed prior to confirmation if needed. The entire lab process, from Accessioning to Confirmation, is inspected under both the CAP (College of American Pathologists) Hair designation and the ISO / IEC 17025 accreditation.

Advantages of hair drug testing:

  • Extended detection timeframe: Hair drug tests can identify drug usage for as long as 90 days, whereas urine tests have a shorter detection timeframe.
  • Hard to manipulate: Cheating on a hair drug test is highly challenging, resulting in more precise outcomes.
  • Offers usage history: It can illustrate a timeline of drug usage over an extended period, not just recent use.

Limitations:

  • Limited in detecting recent usage: It requires about 5-7 days for drugs to become discernible in hair.
  • Expense: Hair drug tests are typically more costly than other drug testing techniques.
  • Result fluctuations: Elements such as hair color and personal hair growth differences can influence drug metabolite levels in hair.

Note: Despite often being named "hair follicle tests," the analysis targets the hair strand rather than the hair follicle beneath the scalp.

Why Hair Follicle Testing Beats Urine Testing

In Kent, WA, hair follicle testing offers distinct advantages over traditional urine tests. Hair tests provide enhanced accuracy and reliability in detecting substance use from as far back as 90 days. Unlike urine testing, hair analysis captures a broad spectrum and history of drug use, making it the preferred choice for employers maintaining stringent drug-free policies. The undeniable precision in detection ensures greater security in understanding employee substance history.

Extended Detection Window

Hair follicle testing in Kent, WA provides an extended detection window that far exceeds traditional tests. Capable of identifying drug use up to 90 days prior, this method offers employers a profound insight into individuals' substance usage over time. This longer timeframe facilitates a comprehensive analysis of a person's drug history, crucial for making sound hiring and management choices, ensuring workplace safety and integrity.

Tamper-Resistant Testing Method

The integrity of hair follicle tests in Kent, WA significantly reduces tampering risk compared to other methods. It offers a robust defense against sample adulteration, providing results that are both dependable and beyond reproach. Employers can be assured of the authenticity of findings, reinforcing drug-free policies convincingly by utilizing this method's inherent resistance against any attempts to manipulate outcomes.

Convenient Nationwide Locations

Accredited Drug Testing stands out in Kent, WA and beyond for our convenient nationwide testing locations. We provide seamless access to testing services, ensuring clients experience minimal fuss when organizing assessments. Our extensive network allows for easy scheduling and quick testing procedures, proving invaluable for those seeking timely and efficient drug testing solutions across diverse locations.

Simple, Confidential Process

In Kent, WA, accessing our services involves a simple and confidential process. Accredited Drug Testing ensures that each stage, from ordering to receiving results, remains straightforward and private. We prioritize customer concerns regarding data privacy and the simplicity of the process, bolstering confidence and satisfaction and ensuring convenience and discretion throughout the assessment.

Affordable, Fast Turnaround

Our offerings in Kent, WA feature affordable pricing coupled with rapid turnaround. Competitive pricing structures make our testing services attractive to companies of all sizes, promising excellent value. Additionally, timely result delivery is ensured, enhancing overall client satisfaction and decision-making confidence across drug testing requirements.

Fast, Accurate, and Reliable Results

In Kent, WA, hair follicle drug tests are renowned for their fast and precise results. The efficiency of these tests is unmatched, delivering highly accurate detection of substance use. Testing methods utilize advanced technology ensuring results that clients can confidently rely on. This speed and reliability allow businesses and individuals to make informed decisions swiftly.

Compliance and Peace of Mind for Employers

Hair follicle testing in Kent, WA aids employers in achieving compliance and peace of mind. Through this method, businesses can adhere to drug-free policies rigorously, minimizing legal repercussions and promoting a healthier workplace. The comprehensive nature of this testing ensures adherence to stringent standards, offering management a reliable tool to maintain a safe and respectable professional environment with minimized risk.

What's New In Hair Follicle Drug Testing according to the Hair Drug Testing Experts

With its multidisciplinary nature, hair testing brings together researchers, scientists, and experts from various domains to develop innovative techniques, explore new methodologies, and address emerging concerns, responding to the ever-evolving challenges of drug abuse, therapeutic drug monitoring, and environmental exposures to pollutants.

The joint meeting of the Society of Hair Testing (SoHT) and the Italian Group of Forensic Toxicologists (GTFI) was organized in Verona, June 8–10, 2022, and hosted by the Legal Medicine team of the Verona University Hospital, directed by Franco Tagliaro together with Federica Bortolotti and Rossella Gottardo.

It served as a prominent platform for knowledge exchange and collaboration, facilitating groundbreaking advancements in hair testing and analysis. In this special issue of Drug Testing and Analysis, we aim to showcase the remarkable manuscripts presented at this significant event, shedding light on the latest research and highlighting the future directions in this field.

Novel Analytical Techniques: The Verona meeting witnessed the unveiling of cutting-edge analytical techniques, offering enhanced sensitivity, selectivity, and accuracy for drug testing. Remarkable advancements in sample preparation, detection, and identification of drug compounds have been presented. The manuscripts in this section presented novel approaches, such as multianalyte methods and on-line preparation which can enable rapid analysis and improve thorough forensic investigations.

Biomarkers and Pharmacokinetics: The identification and validation of reliable biomarkers and pharmacokinetic studies are fundamental aspects of drug testing and analysis. The impact of hair treatments on the oxidation/decomposition of drugs in hair was also explored, as the long-term fate of drugs incorporated in the keratin matrix. Furthermore, the SoHT meeting in Verona featured research on the identification and quantification of alcohol abuse biomarkers, their stability, and their correlation with exposure and other biomarkers.

Forensic Applications and Interpretation: One of the vital objectives of hair testing is its application in forensic investigations and legal proceedings. The SoHT meeting in Verona emphasized the significance of rigorous interpretation of analytical results and the need for standardized protocols. Manuscripts in this section present advancements in forensic toxicology, and have explored the challenges posed by emerging designer drugs and strategies to combat their proliferation. The pitfalls encountered when the exogenous/endogenous nature of a substance is questioned were presented and discussed. The special issue presents also manuscripts that delve into the ethical implications of drug testing in drug facilitated sexual assaults.

Clinical Applications of hair testing are witnessed by the insight on environmental tobacco smoke exposure, assessed by hair analysis in a population of students and the study of in utero-exposure to drugs of abuse through neonatal hair analysis. Exposure to drugs was also important in cases of child abuse/neglect, when the clinical purpose of hair testing merge with its forensic applications.

The legal framework surrounding hair testing and the achievement of guidelines to ensure fairness, accuracy, and confidentiality in drug testing practices have also been discussed,and the SoHT consensus on general hair testing and testing for drugs of abuse was presented at the meeting and published as a Letter to the Editor.

In conclusion, the special issue of Drug Testing and Analysis, featuring manuscripts from the SoHT–GTFI meeting in Verona 2022, reflects the remarkable advancements achieved in this field. The manuscripts provide valuable insights into novel analytical techniques, biomarkers, pharmacokinetics, forensic applications, and ethical considerations. As we embrace these advancements, we pave the way for a safer, healthier society, where drug testing and analysis serve as powerful tools in protecting public health and maintaining integrity in various sectors. The research presented in this special issue will undoubtedly shape the future of drug testing and analysis, fostering collaboration and inspiring further innovation in this crucial area of scientific inquiry.


Kent Drug Testing

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

Kent DOT Drug Testing

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

Kent DNA Testing

DNA testing for legal and non-legal purposes including child support, and child custody around Kent, WA.

Kent Industry Training

Including specimen collector training, DER training, reasonable suspicion training and much more in Kent, WA.

Kent Hair Drug Testing

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

Kent Alcohol Testing

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

Kent Drug Testing Services

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

Kent 5 Panel Drug Test

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

Kent 10 Panel Drug Test

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

Kent On Site Drug Testing

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

Kent DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Kent, WA 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

A hair follicle drug test analyzes a small sample of hair to detect a history of drug use over time. Because drug metabolites are incorporated into hair as it grows, this method can show patterns of use instead of just recent exposure. It is frequently used for legal and court requirements, long-term monitoring, and high-trust workforce screening.
Standard hair drug testing typically reflects drug use over approximately a 90-day period, based on the length of hair collected at the time of testing. Longer hair can sometimes reflect a longer time frame, and extremely short hair can reduce that window.
Hair drug testing commonly screens for marijuana/THC, cocaine, opiates/opioids, amphetamines/methamphetamines, and PCP. In many cases, additional expanded panels may be requested to include other substances.
Yes. If the donor's head hair is too short or unavailable, body hair may be collected as an alternative. The collector will document the source of the sample. This allows testing even for individuals with recently cut or shaved head hair.
Yes. Hair drug testing is commonly used in court, probation, custody, and compliance matters because the collection process follows a documented chain of custody and the analysis is performed by a certified laboratory. Results are provided in a form that can be reviewed by legal and administrative authorities.
Yes. Individuals, parents, attorneys, employers, and probation programs can all request hair drug testing. A doctor's order is not required. Results are confidential and released only to the authorized requesting party.
Hair testing provides a longer look-back period than urine testing, making it useful when you need to demonstrate ongoing abstinence or identify repeated/recent substance use patterns over time rather than just recent exposure. It is frequently selected for legal, compliance, and custody-related documentation.
A small section of hair is cut by a trained collector in a discreet, controlled manner. The sample is sealed, documented, and sent to the laboratory under established chain-of-custody procedures so that the results can be defended if they are ever challenged.

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

phone support has been excellent

I have used ADT several times. Their phone support has been excellent, both when putting in the orders and when asking for help to interpret results.

Tee Ess - 12/19/2024

A very nice company

A very nice company of expertise. The staff will go above to help you out of your situation in a timely matter 👏

Tam Jack - 2/19/2025

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

Accredited has been wonderful to work with!

Accredited has been wonderful to work with! My court ordered tests are on a very strange schedule but every time I call, they are quick to schedule me and are always able to find a location that works for where I’m at and when! Thank you for making this rather undesirable situation less stressful and efficient.

Madison Sanderford - 8/19/2024

Excellant Performance

The visit here is always the best . The place is always really clean. The employees are super courteous, very polite, and professional. This is the only drug lab I like to go do my drug and alcohol test. I would like to tell them thank you so much for thier excellent performance and job

Eli Gonzalez - 1/4/2025

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

quick to assist

They are very quick to assist with your orders and they helped when I needed to find a new testing facility.

Gary Matkin - 2/19/2025

Really Helpful

I am just really happy to see that the location near me still offers hair follicle tests!! They are really helpful when any false positives happen, waiting on my results. Hope they come fast!

Kali Collins - 1/16/2025

Very helpful

They were very helpful in finding a place to get tested on the route back home! They made a difficult time seem easy with no judgement!

Anne Creden - 11/19/2024


(800) 221-4291