What is the hair follicle drug test?

Drugs for hair follicles is used to screen a person for drug use. When the individual undergoes a hair follicle drug test, his hair sample is taken and checked for molecules and substances with drug metabolites. Metabolites are substances that remain behind when the body metabolizes the medicine. For example, a cocaine user would have cocaine metabolites in the body and some of these metabolites would get into its hair follicles. As such, it is possible to determine whether a person recently used cocaine or other drugs by performing a hair follicle drug test.

Drug testing on hair follicles is often used as an alternative to test urine. Often it can provide a more accurate result simply because evidence of drug use can remain in a person's hair follicles longer than in the urine. Usually this type of testing can detect drugs that have been used until 90 days before the testing occurred. On the other hand, evidence of drug use can be a much shorter period. A person canHave a clean urine test just a few days after using some medicines.

In order to perform a drug test for hair follicles, the person must perform a test to obtain a hair sample. This type of drug testing usually requires a person to provide a sample of about 50 to 70 hair strands. The amount of hair that is needed often depends on the color of the hair and its thickness. In terms of length, the hair strands are usually about 1.5 inches (3.81 cm). Hair is usually cut as close as possible to the scalp, placed in a plastic bag and sent to the testing laboratory.

Some people may wonder if it is possible to deceive the drug test for hair follicles. Some argue that the use of a particular shampoo will make a test of hair follicles easier. In fact, however, it would be difficult for shampoo to deceive this type of test. Screening of hair follicle drugs is used to detect substances that have moved from bloodRiverbed into hair strands. It is therefore unlikely that hair washing would not help. In some cases, people can decide to shave their heads in an effort to defeat drug testing. It is also unlikely that this could cause the desired result because the hair can be used if necessary.