Urine| Hair Follicle | Oral Fluid | Blood | ETG
Hair analysis has emerged as a potent method for identifying drug and alcohol consumption. Hair offers a lengthy record of substance use by encasing biomarkers within the growing hair fibers. When collected from near the scalp, hair can indicate usage over a span of up to three months for alcohol and other substances. Sample collection is straightforward, tampering is relatively challenging, and transport is uncomplicated.
A section of hair measuring 1.5 inches, consisting of roughly 200 strands (approximately the thickness of a #2 pencil) from the scalp provides 100mg, the optimal amount for initial testing and verification. For EtG, specific extensions, or tests exceeding 10 panels, it is advisable to use 150mg of the sample. It is advisable to weigh the hair using a jeweler’s scale. If scalp hair is absent, an equivalent mass of body hair can be collected. References to head hair imply scalp hair exclusively, whereas body hair encompasses other types (facial, axillary, etc.).
Process Overview
The laboratory analysis of a drug test result encompasses four key phases: Accessioning, Screening, Extraction, and Confirmation.
Accessioning entails the initial integration of a sample into a lab's framework, ensuring the sample was securely sealed and shipped, generating a random LAN (Laboratory Accessioning Number), and completing any supplementary data entry beyond what is offered by an electronic chain of custody protocol.
Screening performs a preliminary inspection for substances of abuse. Although Screening provides an economical method to eliminate drug use for most samples, a positive screen necessitates confirmation to be legally valid. Samples preliminarily positive in Screening require a subsequent validation.
If a preliminary positive arises during the Screening phase, further hair is extracted from the original sample for the Extraction process. At this stage, substances are removed from the hair at a significantly reduced concentration compared to other methodologies (e.g., urine or oral fluid), highlighting the complexity of hair drug analysis.
Validating any positive screening outcome is achieved via GC/MS, GC/MS/MS, or LC/MS/MS. Samples flagged as presumptively positive are cleaned before confirmation if required. The complete laboratory journey from Accessioning to Confirmation undergoes scrutiny under the auspices of the CAP (College of American Pathologists) Hair designation and the compliance with ISO / IEC 17025 standards.
Advantages of hair drug testing:
Limitations:
Note: Although colloquially called "hair follicle tests", the examination focuses on the hair strand rather than the follicle beneath the skin.
Why Hair Follicle Testing Beats Urine Testing in Ramsay, MI
Extended Detection Window in Ramsay, MI
Tamper-Resistant Testing Method in Ramsay, MI
Convenient Nationwide Testing Locations and Local Locations in Ramsay, MI
Simple, Confidential Process in Ramsay, MI
Affordable Pricing and Fast Turnaround in Ramsay, MI
Fast, Accurate, and Reliable Results in Ramsay, MI
Compliance and Peace of Mind for Employers in Ramsay, MI