The reasons are many why the employers want to perform the drug testing for employees. One of the major reasons is that they do not want to hire those persons, who are serious drug users for a long time because the more chances, these persons will carry on using the drugs and stay absent from the work, affecting the productivity and success of the company. This is why they prefer going through the drug testing process. Hairfollicles are used to undergo this test. In any case, if an employer wants to know that if a person is a short term drug user, then they use the urine and blood tests.
In the case of the long-term drug user, the hair follicle test is used. There is a chance that the drug testing of the hairs will reveal someone who only uses drugs from time to time. With the help of the hair tests, employers can get a chance to find out the drug use as far back as twelve months, although, the perfect results are generally from the previous ninety days. This type of test works well due to the fact that the hair needs blood to grow that it gets from the roots of the hair follicles. The use of the drugs remains residues of the drug in the blood stream that gets transported to the follicles. It means that the intelligence of the body will create metabolites, which generally will be deposited in the hair. It means that the hairs are the necessary tool to keep a record of all the drug activity you have.
But there is nothing to worry at all. Passing the hair follicle test in front of the employerhas also become easier and faster due to the presence of many alternatives in the market, like detoxifying shampoos and much more.