Hair grows in three distinct cycles, an active phase (anagen), transitional phase (catgen), and resting phase (telogen). The hair follicle, located about 4mm below the surface of the skin is supplied by a capillary blood system, and surrounded by three types of glands which literally bathe each follicle and appear on the skin surface as sweat. The hair follicle cells are in constant active proliferation but in the shaft there is virtually no metabolic activity. These cells give rise to the different layers of the hair shaft-cuticle, cortex, and medulla. It originates from hair follicles in which the germination centre is formed by active matrix cells. Hair is a remarkable medium for recording drug and alcohol abuse but the functional characteristics of hair and its role as a sample source are very complex. Hair Drug Testing & Alcohol Testing and the Physiological Role of Hair Generally it takes approximately 5 days for drugs to show up in a person's hair and they will continue to be detectable in the hair for several months. Laboratory analysis of the hair shaft from an individual can achieve highly accurate drug test results and provide a historical use record. For this reason many courts and legal entities and pre employment and work screening have chosen hair drug test as the preferred method of drug testing. Consequently there is little possibility of sample contamination or manipulation. Since target drug or drug metabolite residues are chemically and structurally stable for an extended period of time within the hair shaft core, they cannot be externally washed, bleached, chemically treated or flushed out of the hair structure. By testing for the presence of drugs in the hair shaft core on a given length of hair, a historical record of past drug usage can be constructed. Normal growth rates for human hair are approximately 3.5 cm per month. As a result, trace amounts of the target drug or drug metabolite are deposited in the hair follicle and become entrapped in the core of the hair shaft as it grows out from the hair follicle. Drugs which are ingested circulate in the bloodstream which nourishes developing hair follicles. The presence of drugs in hair is based on a simple principle. The metabolites of chronic drug use, Illicit and repetitive is incorporated into hair for a period of about 90 days. Alcohol (an additional test If requested).Synthetic Hair or Added hairs are not suitable for collection Hair Follicle Test Can Detect Following Drugs Things to avoid prior to collection of Hair SampleĪvoid hair gel or oils for 24 to 48 hours Results of the tests will be emailed to the client or to the third party as requested by the individual who is authorised to receive the results Results approximately take Two working weeks Our centre collect the sample and forward to PSYCHEMEDICS drug testing labs based in America through AWDTS in Queensland. Hair follicle Drug Testing involved for various purposes like employment purposes Routine occupational drug testing at the employments level, custodian or Legal matters etc ITVC doctors - are certified doctor for collection of Hair for HFD testing
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