Urine| Hair Follicle | Oral Fluid | Blood | ETG
Hair testing has increasingly become recognized as a significant asset for identifying drug and alcohol consumption. Hair can capture a long-term account of alcohol and drug exposure by embedding biomarkers within the strands of growing hair. When harvested near the scalp, hair is capable of providing a detection period for alcohol and other drugs of up to roughly 3 months. Collecting hair is straightforward, relatively hard to tamper with, and simple to send.
A sample of about 1.5 inches including roughly 200 strands of hair (similar in size to a #2 pencil) collected nearest the scalp yields 100mg of hair, serving as an ideal sample for both screening and confirmation. For EtG, add-ons, and/or tests exceeding 10 panels, 150mg of the sample is advisable. It is prudent to measure the specimen using a jeweler’s scale. If scalp hair is not accessible, a comparable amount of body hair may be used. When discussing head hair, it refers solely to scalp hair. Body hair denotes all other types of hair (facial, axillary, etc.).
Process Overview
The main four stages within the laboratory processing of a drug test outcome include Accessioning, Screening, Extraction, and Confirmation.
Accessioning starts with the preliminary processing of a specimen within a lab’s system. This stage verifies whether the sample was properly sealed and transported, assigns a unique LAN (Laboratory Accessioning Number), and completes any additional data input that's not managed by an electronic chain of custody system.
Screening consists of an initial brief analysis for substances of abuse. Though Screening offers a cost-efficient means to negate drug use in many samples, any positive result needs confirming to be court-admissible. Any specimens that are tentatively positive during Screening require further confirmation.
Should a specimen appear tentatively positive at the Screening phase, additional hair is extracted from the original sample for preparation in Extraction. In Extraction, drugs are harvested from hair at significantly lower concentrations compared to other methods (e.g., urine or oral fluid), underscoring the complexity of hair drug testing.
Confirmation of any positive screening outcome is performed using GC/MS, GC/MS/MS, or LC/MS/MS. Every presumptive positive specimen undergoes washing prior to confirmation when necessary. The comprehensive lab process from Accessioning through to Confirmation is overseen in line with both the CAP (College of American Pathologists) Hair designation and the accreditation to ISO / IEC 17025 criteria.
Advantages of hair drug testing:
Limitations:
Note: Commonly termed "hair follicle tests", the test actually examines the hair strand rather than the follicle beneath the scalp
Why Hair Follicle Testing Beats Urine Testing in Meadows, ID
Extended Detection Window in Meadows, ID
Tamper-Resistant Testing Method in Meadows, ID
Convenient Nationwide Testing Locations and Local Locations in Meadows, ID
Simple, Confidential Process in Meadows, ID
Affordable Pricing and Fast Turnaround in Meadows, ID
Hair follicle drug tests are known for their fast and precise results in Meadows, ID. They offer a high degree of accuracy in detecting substance use, ensuring reliable outcomes. Compared to other methods, hair tests provide a clearer view of an individual's drug history, which is pivotal for informed decision-making. Their rapid processing and accurate detection rate make them a preferred choice for substance testing.
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