The Working Mechanism of Hair Follicle Drug Testing

Hair follicle test is primarily performed to detect any usage of illicit drugs (cocaine, heroin, Meth, etc.) in the individuals’ bodies. If you’re a victim of drug abuse or are addicted to drugs your chances of passing this drug test are slim to none. This forensic toxicology test can identify the consumption of drugs for past 5 to 90 days.

Even though, hair follicle testing is a newer methodology as compared to urine test and other mechanisms, it’s still gaining popularity due to the considerable and voluminous look-back duration it offers. While urine test can only detect drug ingestion and alcohol consumption for about a week, hair follicle test can be used to diagnose any repeated, continual or binge usage over an extended period of time.

As hair follicles are the dead cells in our body, waste out of the metabolism is accumulated there and that’s the reason once the drugs have been processed by the human body, the bloodstream inserts its metabolites in the hair follicles. That’s why the hair sample is taken from as close to the scalp as possible. The interesting part is if a person doesn’t have enough head hair, his body hair can also be used for the purpose. Nevertheless, as body hair is replaced in almost a year, the drug particles can be detected for up to even one year after the drug has left the blood stream which can be quite confusing.


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