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Read about THC hair drug test.

Hair follicle drug tests are believed to be a revolutionary method of testing drugs utilizing hair strands. They are more reliable methods to establish and verify substance abusers. The use of hair testing methods for screening drugs has increased steadily in the recent years and presently used by several corporate companies of all the sectors. It is widely used and accepted by the United States courts. This method will not only determine the presence of illegal substance, but will also provide the historical drug use record. This will help in discriminating between an occasional user and a chronic abuser. Several websites on the internet have come forth to help the abusers pass a drug test. Info related to topics like how to beat oral drug test or THC hair drug test can be easily accessed through such websites.

Hair drug test utilizes some 90 strands of hair to analyze the use o0f illegal drugs. As the hair growth is fed by the bloodstream, the consumption of drugs can be revealed by analyzing these samples. Hair follicle drug tests measures the drug metabolites that are embedded in the hair shafts. When drugs enter the bloodstream, it is broken down to its metabolites. The bloodstream carries these metabolites to the hair shafts and this is how the metabolites get encased in the hair. The hair specimen will be subjected to an initial test that will detect the drugs and metabolites. If the test comes out to be positive, a GC/MS confirmation test is done. In the absence of sufficient amount of hair on the head, the hair from any other part of the body is used as a substitute.

Marijuana seems to be the choice of teens and young adults. The drug test for marijuana screens for THC, the psychoactive component that produces hallucinogens. Marijuana is the only drug that is likely to stay in the system for longer durations. The THC hair drug test can detect the use of marijuana 90 days back. On an average, the human grows at the rate of 0.5 inch per month. This arbitrarily limits the detection period to 90 days. However, longer the hair, longer the history of marijuana use will be revealed!