I am a FIRM believer of quick fix. it is what i use when i run into a situation. a couple of things for you-you cannot overcook the quick fix with a heat pad. if by chance you go to take your test and the urine is too hot, tell them you can't pee yet and let it cool down for 15 minutes. the lab cannot tell that it is fake pee. the reason that i use synthetic instead of someone else's pee is because quick fix has a 2 year shelf life. I get hit with randoms on my job. when they call my name, i am heading to the lab so I don't have enough time to find someone that is clean to pee for me.

if you are nervous about using the qf you can call spectrum. you can get their number or email off of their website urineluck.com. when i first starting using it, i called them with all kinds of question and they were great about giving me any info that i need.

good luck