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How much hair is required to carry out a hair test?

April 26, 2017carry drug testing hair hair drug test hair drug testing Test

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How much hair is required to carry out a hair test?

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About 50 strands of hair are necessary – obtained from the crown of the head, which is about the width of a thin pencil, or perhaps the tip of a shoe lace. There are typically in excess of 100,000 strands of hair on the head of the average person, so this should not make any cosmetic difference, unless the individual’s hair is very short.