OK I had to take a pre employment urine test, I didn't smoke for eight days and the night before my test I bought an at home test for thc from walgreens and passed it. I have a high metabolism and am very skinny so I figured I would pass it. But it's been four days since I took my employment test and I still haven't heard back from the company. What are the odds that I could have passed my at home test and then failed the company's test the next day? I'd really appreciate any replies..