Ok, so I have to take a rapid urine drug test tomorrow morning. This is my second go and I get no more chances. I bought the field kit yesterday for my drug test today, well I thought id have at least a time frame to take my test...wrong, I had to go an hour after I started work, I was freakin out cause the instructions say to wear the belt for at least an hour after activating the heat pad. So I did my best at heating it up. When I got to the lab the temp read 92, I thought I was all good...i wasn't, by the time I gave her the cup it didn't even reg a temp! Bummer, there goes that $60. So I made up some bs about my "spanx" taking to long to pull up. Lol s she called my employer and asked if I should retest, of course she said yes, but then they wanted me to wait 3 hours and drink a 40 of water. I made up another bs excuse about not being able to stay the 3 hours cause I had to breastfeed. Luckily my employer said I can go back in the morning and the lab lady was rather surprised. Lucky me. My advice to myself and to others, make sure to crush the heating pad and wear for longer than an hour if possible. The heating element stays hot for 10 hours and the urine if good for 8. My plan tomorrow, is to make sure the temp on the urine bag reads well into the 100 marker. It sucks that I couldn't get it done the first time, but I know I will pass tomorrow. But overall the product was easy to use, cut the tubing so that it is easier to handle.