Urine| Hair Follicle | Oral Fluid | Blood | ETG
Recognized as a potent method, hair testing is instrumental in unveiling the history of drug and alcohol consumption. Hair cleverly encases biomarkers within its growing strands, revealing a long-term record. When collected near the scalp, hair can detect substances for a span of up to around three months. Its collection is straightforward, presents challenges to tampering, and can be easily delivered for analysis.
By collecting a 1.5-inch section of about 200 hair strands (approximately equivalent to a #2 pencil’s thickness) near the scalp, you obtain 100mg, which is the preferred amount for both analysis and verification. For comprehensive panels such as EtG, extras, or tests exceeding ten panels, it’s advisable to gather 150mg. Using a jeweler’s scale is suggested for weighing. If scalp hair isn’t available, a similar quantity of body hair can be gathered. ‘Head hair’ strictly pertains to scalp hair. In contrast, ‘body hair’ encompasses all other types (such as facial or axillary hair).
Process Overview
The drug test result processing within a laboratory involves Accessioning, Screening, Extraction, and Confirmation as the core steps.
Accessioning includes the primary processing of a sample within a lab’s system. This process involves confirming the sample’s seal and proper shipping, assigning a LAN (Laboratory Accessioning Number) at random, and completing additional data entry not performed by an electronic chain of custody mechanism.
Screening involves a preliminary evaluation for drugs of abuse. Though a cost-efficient method to dismiss drug usage in most samples, a positive result found during Screening requires further confirmation to stand in legal proceedings. Samples with a presumptive positive in Screening necessitate secondary confirmation.
Should there be a presumptive positive result in the Screening phase, additional hair is taken from the original sample for Extraction. At this juncture, drugs are extracted from hair at notably lesser concentrations compared to other methods (e.g., urine or oral fluid), highlighting the complexity of hair drug screening as a methodology.
Confirmation of any positive screen is performed through GC/MS, GC/MS/MS, or LC/MS/MS. Presumptive positive samples undergo washing pre-confirmation if necessary. The comprehensive laboratory process, from Accessioning to Confirmation, is meticulously reviewed under both the CAP (College of American Pathologists) Hair designation and ISO / IEC 17025 accreditation standards.
Advantages of hair drug testing:
Limitations:
Clarification: Despite the common name “hair follicle tests,” the analysis targets the hair strand, not the follicle beneath the scalp.
For those in New Tokeen, AK, hair follicle testing offers advantages over urine tests. Long detection windows ensure a more accurate analysis compared to traditional methods.
Employers benefit from superior detection accuracy, enhancing workplace safety and policy adherence.
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Hair follicle tests in New Tokeen, AK are tamper-resistant, significantly lowering the risk of sample adulteration.
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In New Tokeen, AK, the efficiency of hair follicle drug tests stands out. With fast and reliable results, these tests offer unmatched precision in identifying substance use.
The method’s high accuracy is invaluable, providing clear insights into an individual's drug history efficiently.
In New Tokeen, AK, utilizing hair follicle testing aids in ensuring compliance with drug-free workplace policies.
This method reduces legal risks, providing peace of mind for employers, while enhancing overall workplace safety.
