Urine| Hair Follicle | Oral Fluid | Blood | ETG
Hair testing has emerged as a robust method for identifying drug and alcohol consumption. Hair offers an extended record of alcohol and drug use by embedding biomarkers within the strands as they grow. If obtained near the scalp, hair provides a detection period of up to roughly three months for alcohol and drugs. Hair collection is straightforward, relatively tamper-resistant, and easy to transport.
A 1.5-inch segment of roughly 200 hair strands (comparable to the diameter of a #2 pencil) closest to the scalp yields 100mg of hair, which is the preferred sample size for both screening and confirmation. For EtG, additional tests, and those exceeding 10 panels, a 150mg sample is suggested. It is advised to weigh the sample using a jeweler’s scale. If head hair is unavailable, a similar mass from body hair can be collected. When mentioning head hair, it refers exclusively to scalp hair. Body hair encompasses all other types, such as facial and axillary.
Process Overview
The laboratory analysis of a drug test result comprises four primary steps: Accessioning, Screening, Extraction, and Confirmation.
Accessioning entails the initial integration of a sample into a lab's system, which involves checking that the sample was properly sealed and dispatched, assigning a Laboratory Accessioning Number (LAN), and finalizing any additional data entry not covered by an electronic chain of custody system.
Screening is an initial rapid assessment for drug substances. While it's a cost-efficient way to exclude drug usage for most samples, a positive screen must be verified to be court-admissible. Presumed positive samples from Screening require further confirmation.
If Screening results are presumptively positive, additional hair is taken from the initial sample for Extraction. At this phase, drugs are extracted from hair at much lower concentrations than other methods (e.g., urine or oral fluid), making hair drug testing the most challenging to execute.
Confirmation of a positive result is carried out using GC/MS, GC/MS/MS, or LC/MS/MS techniques. All presumptive positives are cleansed before confirmation as needed. The entire lab process from Accessioning to Confirmation is assessed under both the CAP (College of American Pathologists) Hair category and ISO / IEC 17025 accreditation standards.
Advantages of hair drug testing:
Limitations:
Note: Commonly called "hair follicle tests," the analysis actually focuses on the hair strand, excluding the follicle beneath the scalp.
Why Hair Follicle Testing Beats Urine Testing in Orchard Hills, PA
Extended Detection Window in Orchard Hills, PA
Tamper-Resistant Testing Method in Orchard Hills, PA
Convenient Nationwide Testing Locations and Local Locations in Orchard Hills, PA
Simple, Confidential Process in Orchard Hills, PA
Affordable Pricing and Fast Turnaround in Orchard Hills, PA
Fast, Accurate, and Reliable Results in Orchard Hills, PA
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