I have some piss my friend gave 24 hours ago, that is unrefrigerated. I have a drug test anout 18 hours from now. DO i need to put this in the fridge, and then warm it up tomorrow after I take it out? I will have to drive 6 hours with the urine tomorrow, after I take it out. Also, I have a bottle of synthetic urine, but would like to save that for when I don't have real urine. So am I screwed with the real urine? Did I leave it out too long, and should I refrigerate it? Thanks in advance.