Beezo,

I just used QF at Quest earlier this month(See Quick Fix 5.7 Results). If you got the temp right, you are golden. Seriously, you have nothing to worry about. If it didn't work, there would be a lot of noise in this forum. Some dude posted a thread on here a few months ago stating he failed using QF and that thread had a sh*t ton of activity. The dude tried to back up his claim with some super-sketchy evidence and then finally disappeared. In my opinion, it was horsesh*t.
There are people reading this forum and using Quick Fix Everyday and If it didn't work, there would be dozens of threads with people pissing and moaning about it. I'd be willing to bet that only about a tenth of the people that come to this forum for advice actually post their successful drug test results because most people only deem it necessary to contribute when they are pissed off about something and want to vent. Just show up on your start date and whatever you do, don't call asking if you passed.

Congratulations on the new job!