First of all I would like to thank every single poster here that has given advice or shared their story and provided an invaluable amount of information to all of us nervous as hell drug testees. My spiel is the same as most, frequent smoker, low metabolism, not enough time to clean up for a drug test which is for a hospital rotation, and scared out of my mind. So I opted to sub using a friend's clean urine in a travel size shampoo bottle. However, due to circumstances beyond my control, I need to keep the pee in my crotch for a minimum of 3 hours (maybe more) with a hand warmer because I also need to allow an hour and a half of travel time by subway from my friend's to the hospital that is doing the drug test and I need to fill out an absurd amount of paperwork at the hospital and also wait for other applicants. Therefore, my question to anyone that's willing to answer it is: will the urine be fine at 98 degrees for 3+ hours? I've searched the forums here and google and I've only found the 8 hour room temperature fact. I understand that the integrity of it could start to break down at a temperature higher than room temperature and I'm scared as hell that it would invalidate the test result and I am very uncomfortable using synthetic. I'm not sure if the test will be EMIT or GC/MS but I know it is not an instant strip test because it takes at least 24 hours to get the results. Thanks to anyone that's read so far, any guidance is greatly appreciated! Also, here're my stats: Male, 5' 10'', 205 lbs (definitely overweight), low metabolism, smoked 1-3 bowls (vape/bong) a day for a year, stopped for first 3 weeks of May, and continued after that with sometimes as much as 5 bowls a day until 13 days ago when I found out about my drug test and stopped. The day of the drug test (this coming Monday!) I will be 16 days clean. When I stopped smoking in May I tested myself with my first void of the day at 2 weeks clean and failed miserably. I also tested myself today with the second void of the day after 2 weeks clean and failed as well =(.