I was just in a similar situation last week and took a quest diagnostics test. QF definately works, I was nervous as hell and shaking in my boots while I was in the waiting room, but the stuff really works. Just microwave, shake attached the heating pad place it between two pairs of underwear (because they check pockets) and when you go to the bathroom pee in the toilet while pouring in the cup. As long as the temp reads between 90-100 degrees you are money. Its really easy and the only surefire way.