Drug tests have become part of the lives of people in various professions. They are no longer a concern for the professional athletes alone. Many companies and government agencies have made periodic drug tests mandatory for their employees.
What Is A Hair Follicle Drug Test?
A hair follicle/hair drug test screens for the presence of illegal drugs in our body to detect drug abuse. During the test, a small amount of hair is cut from your head using scissors and the hair sample is analyzed for drug use during the 90 day period before the drug test. Hair follicle drug test usually screens for the presence of the following:
Marijuana’s intoxicating property is attributed to the higher concentration of THC in it. A higher concentration of THC in our body will lead to a high state where you struggle to focus and concentrate. No wonder, companies do not want their employees to take marijuana. However, the CBD from hemp extracts will not fail you in a drug test. Therefore for users of CBD, drug test would not be a problem.
The hair follicle drug test has an upper hand over most drug tests because it can detect drug use in the last 3 months. A common drug test, urine drug screen, can only detect drug use in the past few days.
How Is The Test Performed?
Hair follicle drug test can take place in a laboratory or at your office. If the sample collection is performed at the office, the test kit has to be mailed to a laboratory. If hair follicle testing is mandatory in your office, you will mostly be supervised during the process.
Washing, dyeing or using hair styling products, fortunately, do not affect the accuracy of the test. In the step of acquiring samples, about 100 to 120 hairs from the crown of your head will be cut out. To prevent bald spots from forming on your head, collectors cut out hairs from different spots on the head.
If you have very less or no hair on your head, hair samples will be collected from other parts of your body.
Studying The Results
Negative results can be determined within 24-hours time. If you test negative, it means that you haven’t engaged in drug use for the past 90 days.
A positive drug result takes around 72 hours to be confirmed. If a test is nonnegative, a second test, gas chromatography/mass spectrometry has to be performed to confirm the positive drug result. In some cases, improper collection of hair samples may lead to inconclusive results.
Although the test has appreciable accuracy, it fails to detect the exact date of drug use.