My friend got a hair test. They did not get enough beard hair, therefore, they could not test for the 5 items they were looking for. He tested positive for Hydrocodone (has script) But, smoke mj on a regular. It did not show up on the first test. They took a second so we will see if it is dirty for mj. He is a daily smoker. Maybe they have been more lenient towards mj since its legal in 20+ states.