Greetings everyone: First post. I've been trolling around here for some information on synthetic urine and thought I'd share my experience. Anyway, you're here to read about my Ultra Pure 4.0oz Synthetic Urine review. Took the test today! Story: Yesterday I was informed by an employment recruiter that they had a good opportunity coming up, and they wanted to interview me. I went to the interview, and all was well and they want to hire me on contingent to a successful background and drug test. Background didn't worry me --- the piss test did. I smoke ALL THE TIME. I'm pretty hefty too, so there's no way to detox w/in 24 hrs. My friend recommended Quick Fix, and had an old bottle to give me. Thanks to the net and rollitup, I found out that his stuff was recalled and needed to hit up the local headshop for some newer synthetic. Guy at the shop recommended this Ultra Pure, 4.0oz. He said it was 2x the amount needed by the DOT, and should be more than enough to cover newer guidelines. Fast forward today. I followed the instructions, attaching the big heating pad via rubber band. I did this ~3 hrs prior to the test to make sure it was warm. The temp read 98 on the nose after 3 hrs, and I was ready to go. I secured the vial on my person via my tighty whities, under my sack (per the recommendation of the headshop owner, he did say 'put it under your sack', lol!) I also put a pair of boxer briefs over them for additional security to droppage. OMG.... This lab was SUPER official -- lots of people in lab coats, secure doors, etc. I wasn't observed peeing though. I hit the stall, and took the package out. The temp strip read 96, and I was quite concerned. I filled the bottle up to 70ml (little over half the bottle of synthetic urine), and spilled some on the side for good measure to look like i pee'd on it. Technician noted temperature of: 92.1 -- This is concerning, but within passing limitations. I should have the results tomorrow. I plan on updating this post as soon as I receive the good news. Good luck to me!