What are the advantages of hair testing?

hair testing has increased in popularity because of its unique ability to provide a longer medical history of drug than other methods. In fact, it is possible to find out several months in the value of indiscretion, unlike a few days or weeks of techniques that analyze blood, urine or saliva. The cheating of such a test is also difficult, because the samples of the strands are taken directly from the subject, usually from his head, which almost makes it impossible to defeat the test by handing a sample of someone else. For example, some people try to flush their systems with strict exercise and drinking a large amount of water before leaving the urine test. Hair drug testing is unique in that metabolites are usually not affected by handling. Class of illegal substances - marijuana, opiates, amphetamines, phencyklidin (PCP) and cocaine - are usually detectable by testing hair medicines. When chemicals are introduced from these medicines into the bloodstream, their metabolites enter hair follicles and migrate into the strandshair. Over time, hair grows, but metabolites from the drug remain in place. Although unusual, it is possible to try the history of drugs that reach up to one year, if hair samples are long enough.

Laboratory technician usually collects a sample, but almost anyone can do it as long as the hair strands are properly processed and delivered to the test device. In order to perform non -invasive analysis, approximately 50 strands of hair are cut from the subject, very close to the base of the head. Ideally, it should be at least 1.5 V (4 cm), so that three months of history can be analyzed. In cases where the individual can be bald or has very short hair, samples can be removed from almost any place on the body.

Hair testing is often served by people who are in a criminal trial period and must remain without drugs to avoid prison. Employers sometimesThey use as a preliminary screening method before the applicant's hire. Testing the strands of hair is generally recommended on all other screening techniques if multiple drug history is required. Laboratory results are usually generated within a few days.