These are small ( like a match-stick ) diagnostic pads. You pee on them. If your body has switched from burning sugar for fuel, to burning FAT for fuel, a byproduct of the process called KETONES, shows up in your urine These sticks test for that. It verifies your body is now burning fat, not muscle.
Simply pass the stick through the urine stream and compare it to the chart, the color gradation tells you your body is burning fat, not blood sugar. Meaning, you are successfully losing body fat, and what you are doing is working. Our customers swear by them.