Urine| Hair Follicle | Oral Fluid | Blood | ETG
Hair analysis has become recognized as an effective method for detecting drug and alcohol consumption. Through entrapment of biomarkers within the fibers of growing hair strands, hair offers an extensive record of substance use. When gathered from near the scalp, hair can reveal a detection window of nearly 3 months for alcohol and drugs. The collection process is straightforward, the sample is challenging to tamper with, and it is simple to transport.
A hair sample of 1.5 inches, consisting of about 200 strands (comparable to the size of a #2 pencil) nearest to the scalp, provides 100mg, which is the optimum amount for both screening and confirmation. For tests such as EtG, add-ons, and those exceeding 10 panels, a 150mg sample is preferable. It is advised to weigh the sample using a jeweler's scale. Should scalp hair not be obtainable, a similar quantity of body hair may be used. By scalp hair, we mean head hair in particular. Body hair pertains to any other type of hair (facial, axillary, etc.).
Process Overview
The laboratory processing stages for drug test results include Accessioning, Screening, Extraction, and Confirmation.
Accessioning refers to the preliminary integration of a sample into the lab's procedure. It encompasses ensuring the sample was adequately sealed and transported, allocating a random LAN (Laboratory Accessioning Number), and completing any further information not accessible via an electronic chain of custody system.
Screening involves an initial, rapid test for substances of abuse. Although Screening is a cost-effective measure for excluding drug usage in a majority of samples, a confirmed screen is necessary for legal admittance. Those samples that yield a presumptive positive in Screening need a subsequent confirmation.
If a sample reflects a presumptive positive in Screening, additional hair is extracted from the original sample and prepared for Extraction. Drugs, in this phase, are extracted from hair at much lower concentrations than with other methodologies (e.g., urine or oral fluid), hence making hair drug screening the most complex approach to execute.
Confirmation, following any positive screening result, employs GC/MS, GC/MS/MS, or LC/MS/MS techniques. Presumptive positive samples undergo a cleansing before confirmation if needed. The complete laboratory process from Accessioning through Confirmation is conducted under both CAP (College of American Pathologists) Hair designation and ISO / IEC 17025 accreditation standards.
Advantages of hair drug testing:
Limitations:
Note: While commonly termed as "hair follicle tests," the actual analysis is conducted on the hair strand and not the follicle beneath the scalp
Why Hair Follicle Testing Beats Urine Testing in Cornish, ME
Extended Detection Window in Cornish, ME
Tamper-Resistant Testing Method in Cornish, ME
Convenient Nationwide Testing Locations and Local Locations in Cornish, ME
Simple, Confidential Process in Cornish, ME
Affordable Pricing and Fast Turnaround in Cornish, ME
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