If they do a hair test.
You've got 30 days for every half inch of hair... on average of 1.5 inch hair that means they've got a 3 month history on you, not to mention how far back they can go if your hair is longer.
If you decide to shave so they can't do a hair test... remember to shave everything. A friend of mine buzzed off his head and eyebrows.. only to go into the test and have them pull a strand off his arm. When he told me the story my immediate response was, "You dumbass..."
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Droppin' knowledge since 1986.
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