Today I got a test at 6:45 and around 3:00 I'm getting my friend whose is clean to piss for me. I need the temp to be right. I have no warmers or anything but I'm thinking of putting extremely hot water in ziplock and throwing the water bottle with piss in it. When it's 5:40 I have to take out the bottle from the ziplock and take it with me. By 7 I got to take the test. Will this work??