I was so very excited to order this product! Unfortunately, I probably will not ever use it again. I went through the included 10 ketone strips within a week and only received four readings. The machine would always register weird error messages or nothing at all. The same goes for the blood glucose strips. It takes me a minimum of four to get a reading. Most readings I have to repeat multiple times because the machine has given me an error OR it gave me a reading of a 30. Weird, right? A 30? Anyway... I am diabetic, so I have been using meters for a very long time - many different kinds of meters -- so I really do not believe it was operator error. It is just not a very consistent or reliable machine. Sadly