Urine| Hair Follicle | Oral Fluid | Blood | ETG
Hair screenings are esteemed as an efficacious method for identifying drug and alcohol consumption. Hair retains a comprehensive history of substance use by embedding biomarkers within the strands as they grow. When collected near the scalp, it can furnish an approximate 3-month detection range for substances. Hair collection is straightforward, somewhat resistant to tampering, and convenient to mail.
A 1.5-inch portion comprising around 200 hair strands (similar in size to a #2 pencil) nearest the scalp constitutes roughly 100mg, an optimal amount for analysis and certification. For EtG, additional tests, and tests exceeding 10 panels, 150mg of the sample is advisable. The sample should ideally be weighed on a jeweler’s scale. If scalp hair is unavailable, an equivalent amount of body hair can be utilized. When discussing head hair, we mean scalp hair exclusively. Bodily hair encompasses all other varieties such as facial and axillary hair.
Process Overview
The four primary steps in laboratory handling of a drug test sample are Accessioning, Screening, Extraction, and Confirmation.
Accessioning comprises the introductory handling of a sample into a laboratory’s framework. This involves confirming the sample’s secure sealing and shipping, assigning a unique LAN (Laboratory Accessioning Number), and finalizing any further data input not supplied through an electronic custody record.
Screening entails an initial rapid evaluation for substance misuse. While Screening economically excludes drug usage in most cases, a positive indication must be verified for legal admissibility. Samples preliminarily positive in Screening require confirmation.
Should Screening produce a preliminary positive, additional hair from the initial sample undergoes Extraction. During this stage, drugs are isolated from hair at considerably lower levels compared to other methodologies (e.g., urine or oral fluid), rendering hair drug screening particularly complex.
Confirmation of positive findings is executed using GC/MS, GC/MS/MS, or LC/MS/MS. Presumptive positive samples receive necessary cleansing before confirmation. The entire process, from Accessioning through Confirmation, is assessed within CAP (College of American Pathologists) Hair parameters and in alignment with ISO / IEC 17025 accreditation.
Advantages of hair drug testing:
Limitations:
Note: Although commonly called "hair follicle tests", the analysis focuses on hair strands, not the follicles beneath the scalp.
Hair testing in Sixes, OR, trumps urine testing in detecting substance use, offering superior accuracy.
The advantage of hair over urine is unmatched; a longer detection period ensures comprehensive results in Sixes.
Hair tests capture more than traditional methods, providing reliability that urine testing lacks in Sixes.
In Sixes, OR, hair follicle testing shines with its 90-day detection window, offering employers a broad view of usage.
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Utilizing hair testing in Sixes helps ensure adherence to policies, promoting a secure workplace.
