Accredited Drug Testing offers comprehensive hair follicle drug exams in Madison, Wisconsin. For those requiring hair-based drug or alcohol assessments, our expertise lies in hair testing, and we provide facilities across all cities nationwide capable of conducting these tests. Typically, 1.5 to 2 inches of hair from the crown or body is needed for analysis. Hair samples can be checked for drugs, alcohol/ETG, or other tailored testing protocols.
In recent times, drug testing procedures have increasingly embraced hair follicle drug examinations. Employers, legal systems, and Substance Abuse experts often prefer this method over standard urine analysis. It is especially favored by zero-tolerance employers, judicial systems, and individuals on probation. The standout advantage is its extended detection range for drug usage, typically reaching up to 90 days, collected under supervision and nearly tamper-proof. However, for detecting very recent use, within 5 days, urine tests remain the gold standard.
* 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 has emerged as an effective method for detecting drug and alcohol usage. Hair retains a long-term record of alcohol and drugs by capturing biomarkers in the hairs as they grow. When collected near the scalp, hair can offer a detection period of up to about three months for alcohol and drugs. It is easy to collect, challenging to tamper with, and simple to transport.
A sample of 1.5 inches, comprising roughly 200 hair strands (comparable to the width of a #2 pencil) nearest to the scalp, will give 100mg of hair, the preferred quantity for both screening and confirmation. For EtG, additional tests, and/or screenings beyond 10 panels, a 150mg sample is advised. It is suggested that the specimen be weighed using a jeweler's scale. If scalp hair isn't available, an equivalent quantity of body hair may be used. References to head hair pertain solely to scalp hair. In contrast, body hair encompasses all other hair types (like facial, axillary, etc.).
Process Overview
The key stages in the lab processing of a drug test outcome include Accessioning, Screening, Extraction, and Confirmation.
Accessioning involves the preliminary handling of a sample into a lab’s database. This step ensures the sample was adequately sealed and sent, assigns a random LAN (Laboratory Accessioning Number), and completes any data entry that an electronic chain of custody system does not cover.
Screening is a preliminary swift check for drug abuse. Although Screening is a cost-effective method to exclude drug usage on most samples, any positive results need confirmation to be court-admissible. Presumptive positive samples in Screening indeed require an additional confirmation step.
When a sample is presumptively positive during Screening, extra hair is extracted from the primary specimen for Extraction. This phase involves extracting drugs from hair at lower concentrations than other methods (e.g., urine or oral fluids), making hair drug screening one of the most challenging methods.
Confirmation of positive screening results is performed using GC/MS, GC/MS/MS, or LC/MS/MS. All presumptive positive samples are washed as necessary before confirmation. The comprehensive lab process, from Accessioning to Confirmation, is reviewed under the CAP (College of American Pathologists) Hair designation and compliance with the ISO / IEC 17025 standards.
Advantages of hair drug testing:
Limitations:
Note: Although commonly called "hair follicle tests", the analysis is performed on the hair strand, not the follicle beneath the scalp.
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