QuickFix question, taking test this afternoon!

Hey guys :) So Im using a friends pee, and using the container of the quick fix for a non-dot pre employment drug test and was wondering if anybody knows if these are reusable or become less accurate after multiple uses (the temp. guage I mean). I want to try putting my dirty pee in and strapping the heater to it to see what happens. Im literally getting my sample (max 2 hours old, perferably fresh is what ill ask for) and needle/syringing it into my quick fix bottle. It takes a few minutes because I cant find my 10cc syringe, just my 5 but it works and shouldn't hurt the real pees integrity lol, I dont think so at least. Please correct me if im wrong. But anyways, is the bottle still ok to use if I test it out like that? Im not sure if the heat pack will make fresh pee get too hot on my way to the test plce (30 minutes) and any wait time there may be inside the test office. I have extra heating pads, I tested it out last night and it didn't seem to get that hot. Whats my best option here? I was going to run into somewhere close to the testing area and check my pee temp before going inside. I know the worst thing is I just have to blow on it a bit to cool it off right? I've NEVER taken a drug test before, so Im definitely nervous.

Even after multiple reheats, the temp strip on the QF bottle will be fine.

It worked GREAT!! :) Since I know the pee is clean and it was perfect temp I know I passed! Cant wait to hear the good news tuesday when my boss will get back from vacation and see the results!! :hippy: