If you dont want to buy the Synthetic Kit...All you need: Buddies clean piss, hand warmer(or whatever chemical warmer you want to get), and a 7.99 digital thermometer from your local walgreens/CVS/walmart, and some kind of container(get like a BIG bottle of visine or something similar in size because the lab will make a line of where you gotta fill too..

1. Put clean piss in bottle.
2. Microwave for like ten seconds.
3. Check it with the digital thermometer(when your in the lab it has to be 90-100 degrees, but you want to have it between 96-100, I had to wait about an hour in the place before I could go!!!)
3. Tape the wamer to the bottle
4. Crotch it!

Bring the digi with you to the lab(make sure it doesnt beep and shit!) check the temp, if its above 100 F, swirl it and blow on it(1 swirl/blow is about minus 1 degree) in the case of the urine being to cool, rub your finger on your pants and gently put it on the temp strip on collection cup(dont press too hard) and then your good2go!:stoned: