i would just stay clean. if you cannot go get a travel size shampoo bottle. clean it out real good, get the 3 ounce size. have someone piss in it male or female and save it in the fridge up to 3 weeks...if he home tests you..he probably will it is so much cheaper you wont have to worry about warming it. if you go to the clinic put it in the microwave lid off for ten seconds then hide in your whitey tighties.