Urine| Hair Follicle | Oral Fluid | Blood | ETG
Hair analysis is now regarded as an effective method for identifying drug and alcohol consumption. Hair can provide an extended timeline of alcohol and drug intake by encapsulating biomarkers within the strands as they grow. When trimmed near the scalp, hair can reveal information about substance use for up to three months. It’s straightforward to collect, tough to tamper with, and convenient to mail.
A section measuring 1.5 inches of roughly 200 hair strands (approximately analogous to a #2 pencil's diameter) nearest the scalp yields 100mg, which is perfect for testing and confirmation. For EtG, supplementary, or tests beyond 10 panels, 150mg is advised. It's best to weigh the sample using a jeweler’s scale. If the scalp hair isn't available, an equal body hair amount can be used. "Head hair" refers strictly to scalp hair, while "body hair" encompasses all other types (facial, underarm, etc.).
Process Overview
The primary stages in the lab processing of a drug test result are Accessioning, Screening, Extraction, and Confirmation.
Accessioning handles the initial sample entry into the lab's system. This includes affirming proper sealing and shipping of the sample, assigning it an arbitrary LAN (Laboratory Accessioning Number), and covering any extra data input missing from an electronic chain of custody.
Screening conducts a preliminary brief analysis for substance abuse. While it economically dismisses drug usage in most samples, a positive screen must be validated to stand in legal scenarios. Any samples showing presumptive positivity during Screening require a follow-up confirmation.
For a sample with a presumptive positive result in Screening, additional hair is extracted from the initial batch and readied for Extraction. Here, drugs are drawn from hair at significantly lower concentrations compared to other techniques (for instance, urine or oral fluid), underscoring hair drug testing's complexity.
GC/MS, GC/MS/MS, or LC/MS/MS techniques handle the Confirmation of positive screening outcomes. Samples preliminary identified as positive are cleansed before confirmation if needed. The complete lab process from Accessioning to Confirmation undergoes scrutiny according to the CAP (College of American Pathologists) Hair standard and accreditation to ISO / IEC 17025 criteria.
Advantages of hair drug testing:
Limitations:
Note: Although termed "hair follicle tests," the analyses focus on the hair strand, not the follicle below the scalp.
Hair follicle testing in Humphreys, OK, offers significant advantages over urine testing. Enhanced detection accuracy and reliability make it a preferred choice.
In Humphreys, OK, employers favor hair follicle testing for its extended detection window. Analyzing drug use over up to 90 days, it provides a comprehensive substance history of individuals.
The hair follicle testing method in Humphreys, OK, greatly minimizes the risk of sample tampering. Reliable and secure, it offers assured results.
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For employers in Humphreys, OK, using hair follicle testing assures compliance and peace of mind. It's a fundamental tool in maintaining drug-free workplace policies.