I enjoy knowing my blood glucose readins and my ketone readings in one meter. Iparticularlylike being able to determine my GKI on your calculator too. Im a numbers person and strive to keep my body in ketosis. My only concern is some times when I KNOW I am in ketosis and I take my reading its low. I take it again and its a point higher--then a third time I get another point higher! I am wasting strips and honestly dont know which reading is correct??? This is frustrating and I am wasting money on these expensive strips. I have used the solution to make sure my monitor is within range and it always test fine. What gives?