I haven't read all of this thread, I just saw the name of it and the last few posts...so I just thought I'd chime in: I have a lot of experience using other's urine to either pass drug screens, or fail for certain drugs and pass for certain others. The best way to go about this, is to rubber band a handwarmer to a plastic bottle containing the other's urine. Put a temperature strip that you may find on a fishtank onto the bottle. Rubber band the handwarmer onto it until the temp strip reads between 95-100F. Once it is at this temperature, remove the handwarmer and put the bottle in your waist band between your underwear and your body. Your body heat will naturally keep the urine just at or barely below 95F. Also, human urine is viable for drug screens for up to 2 weeks if you freeze the urine immediately after excretion. The urine may be a tad cloudy if it sits for a couple weeks in the freezer, but it will 100% work on any drug screen assuming it's not an advanced analysis and even then, it's still probably just fine. Good luck to whomever may need this advice, you shouldn't be penalized in your life because ya got a little reefer in your system! My health insurance won't cover my medications if I piss positive for pot, so that's why I have to do this. It's not appealing by far, but it beats paying hundreds of $ a month out of pocket for meds.