First time I've ever had a drug screen. In this case, it was for pre-employment. A friend of mine recommended what I think is a synthetic called MinuteMan, which is marketed as a hand-warmer. Basically it's packaged with a plastic bottle with a temperature strip on the outside of the bottle, and two vials filled with what I was told is dried urine and a heating catalyst. I had never heard of it before and to be honest was incredibly nervous as this was my first time AND this particular substitute has hardly ANY information on it, either confirmation of users passing or failing. After spending several hours browsing the forums I found only one user who claims to have had success with it on several occasions, but without any information on what test/conditions it was used in. I'm insanely paranoid by nature as I work in the technology field and thus far, as I mentioned, I have never had a drug screen. Here are the conditions in which I used this product. I hope someone here has some feedback, and I will post once I have a better idea on whether or not I've passed or failed. 1: I used a specific type of underwear called 'Boxer-briefs'. I HIGHLY recommend them as, if you get the right fit, they're tight in the crotch, allowing for a secure fit, as well as the fact that the legs attached also fit tightly, adding extra holding 'power'. In addition, most brands come with the front pouch/fold to allow for removing your gear through the fly of your pants, which acts as a great compartment for smaller vials and such. 2: The bottle that this product comes with is fairly large, considering, and can be a bit unwieldy to 'pack'. The temperature strip on the outside is fairly accurate. I put mine below my scrotum with the temp strip down for more accurate reading, 45 minutes before going in for the test. This was sufficient to get the water at an even 90F. The bottle itself is shaped into a width of about 2 inches, coming to a point along each side. Take this into account if you have to do any extensive walking before the test. 3: For my particular test, in this case pre-employment, I was given the instructions of rinsing off my hands prior to providing the sample, and was not allowed to use soap. After removing the contents of my pockets and locking them securely, I was given a cup and asked to fill it to the line. Since I'd discussed with the technician before my test that I had never before had to take a test, they told me that I could give as much as I was able, but to do so in a timely manner so that the temperature could be maintained. 4: Once in the bathroom, I noticed that the water in the toilet was dyed blue, obviously to prevent use for dilution/substitution. For my test I was not observed. I removed the bottle from below my scrotum and removed the vial of dried urine/catalyst from the small 'pouch' in the front of the boxer-briefs, combined them, quietly held the bottle upside down and then right-side up three or four times to get the best possible results for dissolving the catalyst while being as quiet and discreet as I could. The bottle immediately heated to slightly above 100f. I then poured the substitute into the sample container from a slight angle and height to simulate a slight bit of splash on the sample container walls and to simulate the sound. I also filled to JUST below the line, as I had mentioned previously to the tech that I didn't know how much I had. I thought that putting it to the exact line would be somewhat suspicious. I quickly re-'packed' the materials and closed the lid. 5: With my test, the tech had me print and sign my name on the form after allowing me to wash my hands, she then sealed the container in my presence and had me initial. Finally she signed off on the paper indicating that the temperature was acceptable, (between 90 and 100f), and said I was free to go. I'm still very, very worried about the results. Since this seems to be a largely untested product, my concern at this point lies in the possibilities of detection of the synthetic substance. The possibility that perhaps I didn't dissolve the catalyst properly, etc. Since I took my test mid-day on Friday, I likely won't hear about results (if at all, I hope) until at least Monday. Has anyone ever used this product and, if so, to what result? My friend claims to have used it multiple times without any difficulties, but his descriptions for his tests were very different than what I experienced. I hope this helps someone, and if there are any points of advice or thoughts I would be most appreciative. Edit: I thought I should add that the testing facility, according to the paperwork I was given, has/uses a system called FasTrak 1-Hour testing. I tried to research this but found very little about either methodology or if it even applied to the type of testing I was going in for. Anyone heard of this? Also, upon recollecting my experience, I remembered making what i feel may have been a dire mistake. The technician asked what if any medications I'd taken recently, and I mentioned that I had taken cold medication 'several weeks' previous, as well as aspirin. Is it possible to test for these substances and if so, could this possibly lead to detection of the substitution should there be no traces?