Our automated scheduling system is available 24/7. Order your test online and receive your donor/registration pass by email. Click Here
Same Day Service
Accredited Drug Testing offers full-service hair follicle drug screenings in SeaTac, Washington. If a hair-based drug or alcohol screening is required, our specialty in hair testing is complemented by a network of centers nationwide equipped to perform these tests. Typically, 1.5 to 2 inches of scalp or body hair is necessary, and tests can detect drugs, alcohol/ETG, or be tailored for specific requirements.
In recent years, the shift toward hair follicle drug testing has gained momentum. Employers, judicial systems, and substance abuse experts are increasingly opting for hair tests over urine tests. Their advantage lies in up to 90 days of drug use detection, collected under observation, offering a tamper-proof process. Nevertheless, for detecting recent drug use within five days, urine tests remain more precise.
Accredited Drug Testing offers full-service hair follicle drug screenings in SeaTac, Washington. If a hair-based drug or alcohol screening is required, our specialty in hair testing is complemented by a network of centers nationwide equipped to perform these tests. Typically, 1.5 to 2 inches of scalp or body hair is necessary, and tests can detect drugs, alcohol/ETG, or be tailored for specific requirements.
In recent years, the shift toward hair follicle drug testing has gained momentum. Employers, judicial systems, and substance abuse experts are increasingly opting for hair tests over urine tests. Their advantage lies in up to 90 days of drug use detection, collected under observation, offering a tamper-proof process. Nevertheless, for detecting recent drug use within five days, urine tests remain more precise.
* 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 hair drug testing near me or hair 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.
Hair analysis has emerged as an effective method for identifying drug and alcohol consumption. The hair traps indicators within the fibers of the strand, offering a comprehensive timeline of substance usage. When taken near the scalp, hair can reveal drug or alcohol use over a span of around three months. Collection is straightforward, tampering is not easy, and transportation is hassle-free.
Collecting a 1.5-inch portion containing about 200 hairs (similar to a #2 pencil width) near the scalp yields 100mg, ideal for both screening and verification. For EtG, additional tests, or beyond 10 panels, a 150mg sample is suggested. It’s advisable to measure the sample using a jeweler’s scale. If scalp hair isn't available, an equivalent amount of body hair may be used. Here, head hair means scalp hair only, whereas body hair includes all other forms (beard, armpit, etc.).
Process Overview
The testing process is comprised of four key steps: Accessioning, Screening, Extraction, and Confirmation.
Accessioning is about integrating the sample into the laboratory’s system, ensuring it was sealed and transported correctly, assigning a LAN (Laboratory Accessioning Number), and finalizing any additional data entries that an electronic chain of custody system may have missed.
Screening consists of a preliminary assessment for drug traces. It is an economical method to exclude drug use for most samples, though a positive result in this phase must be validated for legal purposes. Samples that are preliminarily positive necessitate a confirmatory test.
Presumptively positive samples then progress to the Extraction phase where additional hair is prepared. Here, drugs are retrieved from the hair at lower concentrations compared to other methods (like urine or saliva), making hair analysis a challenging procedure.
Verification of any preliminary positive screening is performed using GC/MS, GC/MS/MS, or LC/MS/MS methodologies. Prior to confirmation, presumptive positives undergo necessary washing. The total laboratory operation, from Accessioning to Confirmation, is reviewed under both the CAP (College of American Pathologists) Hair standards and ISO / IEC 17025 accreditation.
Advantages of hair drug testing:
Limitations:
Note: This procedure examines the hair strand itself, not the underlying follicle, despite often being called "hair follicle tests".
In SeaTac, WA, hair follicle testing surpasses traditional urine tests, providing superior detection accuracy. While urine tests offer a snapshot of recent use, hair tests provide a comprehensive record over months, reducing room for error and enhancing reliability.
Employers in SeaTac, WA, gain a clear advantage with hair follicle testing's extended detection window of up to 90 days. This method offers insights into an individual's substance use history, beyond what traditional urine tests can reveal.
SeaTac, WA's hair follicle drug tests significantly minimize the risk of tampering. Due to the observed collection process and biological properties, manipulation becomes practically impossible, ensuring integrity in results.
Our network of testing centers in SeaTac, WA, and nationwide simplifies the process of acquiring drug tests. Convenient locations are aligned to ensure seamless access, facilitating hassle-free procedures.
In SeaTac, WA, the hair follicle testing process is designed for simplicity and confidentiality. Ordering, conducting, and receiving results are streamlined to protect privacy, catering to individual and corporate preferences.
With affordable pricing and rapid turnaround times, SeaTac, WA, offers excellent value in hair follicle drug testing. Companies of all sizes benefit from competitive rates, ensuring peace of mind and effective management.
Hair follicle drug testing in SeaTac, WA, is renowned for its speed and precision. Unlike other methods, hair testing offers rapid and accurate results, securing its position as a top choice for detecting substance use. Its efficiency ensures that stakeholders have the necessary information quickly.
For employers in SeaTac, WA, adopting hair follicle testing strengthens compliance with drug-free policies, curtailing legal challenges while promoting workplace safety. This robust method aligns with best practices.
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.
Quickly find trusted local drug testing centers in Seatac, WA — fast, convenient, and reliable every time!
Quickly find a local DOT drug testing center in Seatac, WA — fast, reliable, convenient nationwide service!
DNA testing for legal and non-legal purposes including child support, and child custody around Seatac, WA.
Including specimen collector training, DER training, reasonable suspicion training and much more in Seatac, WA.v
Get fast, accurate hair drug testing at our convenient Seatac, WA locations—results you can trust, every time!
Fast, reliable alcohol testing to keep your workplace safe and compliant every single day in Seatac, WA.
Reliable nationwide drug testing services ensuring accuracy, compliance, and quick results for businesses and individuals in Seatac, WA.
Accurate 5 panel drug testing with fast, confidential results—trusted by Seatac, WA employers and individuals nationwide.
Comprehensive 10 panel drug testing with fast, reliable results—trusted for Seatac, WA workplace and personal testing needs.
Convenient on-site mobile drug testing with fast, reliable results—saving time while keeping your Seatac, WA workplace compliant.
Certified DOT physicals with quick, reliable exams to keep Seatac, WA drivers compliant and on the road with confidence.
Join our DOT consortium for hassle-free compliance, random testing management, and reliable driver safety solutions.
I needed a quick drug test for visitation with my children. I called at 6am they answered and set me up with a place a couple miles from my house to go get the test done, that was on Wednesday, I had the results on Friday afternoon and was able to see my kids on Saturday. Thank you for the help!
Mark Broadhead - 2/12/2025
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
Very professional and very quick service to schedule appointments! I am pleased with the services and would definitely recommend using them for any drug testing needs!
Carrie Feerick - 4/19/2025