when i read in certain threads to "invest and practice with a digital thermometer" does that mean to actually take it in with me to the drug testing center? I have one, a baby one, and I practice with it all the time...basically just testing the temperature after the sample has been crotched for 15 min. I dont know though, it beeps when I turn it on and it beeps again continuously when its done making its reading... I think somebody would hear it :wtf: FBR, any thoughts?