Urine| Hair Follicle | Oral Fluid | Blood | ETG
Hair testing is recognized as a robust method for detecting drug and alcohol consumption. Hair captures a prolonged history of alcohol and drugs by embedding markers within the strands of growing hair. When collected near the scalp, hair can offer a detection window of up to around 3 months for alcohol and drugs. Collection is straightforward, difficult to tamper with, and convenient for shipping.
A 1.5-inch sample comprising about 200 hair strands (comparable to a #2 pencil) from the scalp will provide 100mg of hair, which is the ideal quantity for screening and confirmation. For EtG, additional analysis, or tests beyond 10 panels, 150mg of the specimen is advisable. It's recommended to weigh the specimen using a jeweler’s scale. If scalp hair is not available, an equivalent amount of body hair may be used. References to head hair pertain to scalp hair only, while body hair covers all other types (facial, axillary, etc.).
Process Overview
The primary steps in processing a drug test result in the lab include Accessioning, Screening, Extraction, and Confirmation.
Accessioning involves the initial processing of a sample in a laboratory’s system. It includes verifying proper sealing and shipment of the sample, assigning a random LAN (Laboratory Accessioning Number), and completing any additional data entry not covered by an electronic chain of custody system.
Screening provides an initial rapid check for drugs of abuse. Although Screening is an economical method to rule out drug use in most samples, a positive screen must be confirmed for court admissibility. Any samples with presumptive positives in Screening need further confirmation.
If the Screening stage yields a presumptive positive, more hair is taken from the initial specimen for Extraction. Here, drugs are pulled from hair at significantly lower concentrations than in other methods (such as urine or oral fluid), making hair drug screening the most challenging method to perform.
Confirmation of any positive result from screening is performed using GC/MS, GC/MS/MS, or LC/MS/MS. All presumptive positive samples are washed before confirmation as required. The complete laboratory process from Accessioning to Confirmation is reviewed under both the CAP (College of American Pathologists) Hair designation and ISO / IEC 17025 standards accreditation.
Advantages of hair drug testing:
Limitations:
Note: Despite being often called "hair follicle tests", the analysis involves the hair strand and not the follicle beneath the scalp
Hair follicle testing outperforms urine analysis in Saint Stephens, NC.
Hair follicle analysis provides an extended detection window up to 90 days.
In Saint Stephens, NC, hair follicle testing is a tamper-resistant procedure.
Convenient testing locations in Saint Stephens, NC offer ease and accessibility.
In Saint Stephens, NC, the hair follicle testing process is simple and confidential.
We offer competitive pricing and fast turnaround times in Saint Stephens, NC.
In Saint Stephens, NC, hair follicle drug tests provide swift, precise, and trustworthy outcomes.
Hair follicle testing ensures compliance and peace of mind for employers in Saint Stephens, NC.