Hair Follicle Drug Testing

The Ultimate Guide – Pass Your Hair Drug Test

Hair follicle drug testing is one of the common alternatives to breath and urine drug tests. The test normally involves using a sample of hair (either head hair or body hair) from the individual and testing it for traces of drugs and their metabolites.

This article explains how the hair drug test works, and how to pass a hair drug test using one of several proven methods.

NOTE: Most of this information was found on (great in-depth site with active Q&A).

When an individual consumes drugs, two major things happen.

Drug TestingFirstly, the drugs get into the individual’s bloodstream. The blood is important as it directly feeds hair follicles thus enhancing their growth.This ultimately means that traces of drugs can be found in the hair follicles as well as the hair shaft.

The second thing that happens is that the drugs are broken down, just like food, into smaller molecules which then allows them to take effect.This process is known as metabolism while the molecules that are involved in the process are known as metabolites. The metabolites are then transferred onto the bloodstream and subsequently into the hair follicles and hair shafts.

Traces of these metabolites in the hair shaft allow drug testing experts to know exactly which drugs the individual has consumed. The presence of these metabolites in the hair also ensures that experts can rule out the possibility that there is contamination in person’s hair as a result of being exposed to the drug externally e.g. from second-hand smoke.

a) Drugs That Can Be Detected

A hair drug test can be used to identify a broad range of illegal drugs and substances. These include the 5 basic classes of drugs that the Federal Government has mandated for testing i.e. Cocaine, Marijuana, Opiates (which include codeine and morphine), Methamphetamine (which includes ecstasy and crystal meth) and Phencyclidine (PCP). Other drugs for which tests are done include heroin, LSD, and even alcohol.

b) Period Of The Test

According to experts, hair grows by half an inch every month. It means that the longer one’s hair is, the longer is the period for the test. However, most standard hair follicle drug tests use only 1.5 inches of hair cut from the root.

Using this length of hair means that the drug test covers the past 3 months (90 days). Nevertheless, it is still possible to go back even further by just increasing the length of the hair sample used. For example, a hair sample measuring 18 inches can theoretically be used to trace drug use from up to 3 years back.

It would be important to note that both body hair and head hair grow at the same rate. It would also be important to note that hair follicle drug testing can be used to detect drugs at least 5-7 days after an individual has used them. This means that these drug tests cannot be used to identify drugs that have been used on a particular day.

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