Accredited Drug Testing offers comprehensive hair follicle testing services in Seattle, WA. Whether you're looking for a drug or alcohol hair test, we're experts in this field, available in every city across the country to facilitate hair testing. Typically, a hair length of 1.5 to 2 inches is necessary. Our hair tests cover drugs, alcohol/ETG, and other tailored testing choices.
Recently, there's been a growing trend towards using hair follicle drug tests for screening. Employers, courts, and Substance Abuse authorities now often favor this method over the conventional urine test. Hair follicle tests support strict drug-free policies, serving both employers and judicial systems. The notable advantage of hair tests is their extended detection period, reaching 90 days. They are collected under supervision, making tampering difficult. However, urine tests remain superior for identifying recent drug use within five days.
* 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 testing is recognized as a robust method for identifying drug and alcohol consumption. It offers an extended historical record of substances through biomarkers captured in growing hair strands. Hair collected close to the scalp can offer detection for up to a three-month period for alcohol and drugs. This method is easy to collect, relatively resistant to adulteration, and convenient to transport.
A sample measuring 1.5 inches with around 200 hairs (roughly the width of a #2 pencil) closest to the scalp yields 100mg, the preferred amount for tests and confirmations. For tests involving EtG, add-ons, or those exceeding 10 panels, 150mg is advisable. We suggest using a jeweler’s scale to weigh the sample. If there's an absence of scalp hair, an equivalent amount of body hair may be used. The term head hair refers exclusively to scalp hair, while body hair encompasses all other hair types (facial, axillary, etc.).
Process Overview
The laboratory evaluates a drug test result through four essential phases: Accessioning, Screening, Extraction, and Confirmation.
Accessioning is the initial phase where a sample is processed into the lab's system, ensuring the sample is properly sealed and shipped, assigning a random LAN (Laboratory Accessioning Number), and completing any data entry beyond an electronic chain of custody system.
Screening is a preliminary assessment for drugs of abuse. While cost-effective for excluding drug use in most samples, a positive screen needs confirmation to be valid in legal proceedings. Samples initially positive in Screening require subsequent confirmation.
When a sample tests presumptively positive in Screening, additional hair from the specimen is selected for Extraction. Here, drugs are extracted from hair at significantly lower concentrations compared to other methods (e.g., urine or oral fluid), making hair drug analysis notably complex.
GC/MS, GC/MS/MS, or LC/MS/MS validate any positive screening results. Samples with presumptive positive results are washed before confirmation as necessary. The complete laboratory procedure from Accessioning to Confirmation is critically reviewed under CAP (College of American Pathologists) Hair designation and adheres to ISO / IEC 17025 standards.
Advantages of hair drug testing:
Limitations:
Note: Commonly dubbed "hair follicle tests", the analysis actually examines the hair strand, not the follicle beneath the scalp.
Why Hair Follicle Testing Beats Urine Testing in Seattle, WA
Extended Detection Window in Seattle, WA
Tamper-Resistant Testing Method in Seattle, WA
Convenient Nationwide Testing Locations and Local Locations in Seattle, WA
Simple, Confidential Process in Seattle, WA
Affordable Pricing and Fast Turnaround in Seattle, WA
Fast, Accurate, and Reliable Results in Seattle, WA
Compliance and Peace of Mind for Employers in Seattle, WA