Articles > Marijuana Hair Drug Test Info

Marijuana hair drug test is considered one of the most often used means of drug testing to define the absence or presence of marijuana or other specified drugs. It is regarded as accurate and may indicate marijuana use as long as 90 days ago. Since the bloodstream feeds the growth of hair, analyzing a sample of hair shows up the consumption of drugs of abuse. Besides marijuana hair drug test, there is hair testing for Amphetamines, Cocaine, Opiates, and Phencyclidine.

In fact, human hair grows about 0.5 inches within a month. Marijuana hair drug test gives the results about 30-90 days after drug taking, as the testing laboratories typically require 0.5-1.5 inches for such testing comparatively. The hair of donor is cut near the crown's rear and close to the scalp. A sample of roughly 120 strands is needed. In case the test subject has no or little hair, or hair is no longer that 1/2 inch, then a body hair may be conducted. Also, for marijuana drug testing, a hair sample is collected from leg, underarm, chest or facial hair. In case you conduct for yourself, you should not combine hair from various sites on the body. Using a sample of hair, the hair drug test analysis, and assesses the amount of marijuana metabolites entrenched into the hair shaft.

Testing process includes the next steps: 1. Cleaning the scissors with alcohol before getting hair sample. 2. Collecting the sample. 3. Putting a testing sample in the thin sheet, keeping the root end out about 1/4 inch from the thin sheet's slanted end. Then folding the sheet sideways to place the sample into the envelope. 4. Taking the security stamp from the CCF's left side and place this on the envelope's bottom where indicated. Instructing the donor to date the stamp and envelope when the collector has put the stamp on the envelope. Then the collector dates the stamp and envelope.


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