Niacin doesn't work, thats a myth.

Anyways, I just realized I pass because like I said before when I called the lab they said the employer had the test results 5 mins after taking the test and all they could tell me is if they had any questions they would have called me.

Well, even if you do test positive for marijuana, they have to call you, only because they would have to ask you if you were taking marinol. Marinol comes up positive in drug screens just like good ole MJ does. He said, "if we needed to ask you anything we would have called" so that tells me that I passed.