Hair Drug Testing Facts

Did you know that hair follicle drug testing is becoming increasingly popular within businesses and pre-employment public agencies? There have been instances where state and federal courts have used hair drug testing methods, and now some home drug testing kits are capable of offering hair drug testing. Here are some interesting facts on hair drug testing.

Hair drug testing fact #1

Hair drug tests are able to detect longer periods of time of drug use rather than blood, urine or saliva tests. This is due to urinalysis testing being able to detect substances only in the blood stream. In hair follicle testing traces of the substances can remain in your hair long after it has left your blood stream.

Hair drug testing fact #2

If you are bald or shave your head, you still are not off the hook for this test. They are able to use body hair from chest, armpits, or legs. Body hair is replaced annually, so the test results can only trace back to a year.

Hair drug testing fact #3

For every ½ inch of hair, the hair drug test can detect an average of 30 days of drug use. If longer hair is tested, the detection period can be up to two years of drug abuse.

Hair drug testing fact #4

Hair drug tests are able to detect marijuana, opiates, methamphetamines and phencyclidine.

Hair drug testing fact #5

It can take up to 10 days to receive the results of a hair follicle drug test.

Hair drug testing fact #6

A drug testing laboratory needs at least 50 strands of hair that is cut an inch from the crown of the head.

 

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