Quote Originally Posted by ugulantmorbis
My ex-wife managed to piss clean after 6 days of abstaining and she was as much a chronic smoker as I am.

I'm going to get the home test tomorrow and see how I do. If I do fail it, I'm going to use the QF when I take the real test.

But again I wonder: if I do pass the home test, is there any chance I could still fail the real test?
Nope, home test kits are extremely accurate and if you can pass one then you should have no problem passing the lab test.