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Read about hair style drug test.

A hair drug test is considered to be highly accurate method of showing the use of any prescription drugs and drugs of abuse that have been used within a specified detection window by analyzing the sample. Some people try to circumvent the hair style drug testing by shaving off their heads. But this won’t help since in the absence of required amount of hair on the scalp, any body hair can be used as a substitute. In case of pre employment drug testing the inability of gaining a hair sample may be grounds for not hiring the respective applicant. So it is necessary to provide the sample. Passing drug test tips are readily available on the internet, you can avail them easily!

As the hair of an individual grows out, the drugs and drug metabolites are encased in the hair shaft. Thus the longer the hair, the longer back the drug testing labs can go in the history of drug use by the subject. Most hair testing labs can detect the presence of drugs by using only the hair within 2.5 to 4 cm and discard the rest. This limits the detection period to about 3 months, depending upon the rate at which an individual’s hair grows. On an average the human hair grows at the rate of 0.5 inch per month.

The drug metabolites stay in the strands as the strands grow and cannot be removed unless the strands are destroyed completely. The drug screening will not only detect the drug residues but also provide sufficient information about the quantity of drugs ingested as well as the history of use. Hair follicle drug tests are effective in detecting the use for months or even years in future under specific circumstances.

The sample is removed and then cut into many small pieces. These pieces are then soaked in a solvent that will cause some of the metabolites to go into suspension. The solution is then separated using a centrifuge. The sample then undergoes analysis, the readings are noted and the conclusion is made. One can pass a hair drug testing by using the detox shampoos and conditioners that claim to cleanse your hair and guarantee that your hair will be drug free!