This is a complete piece of garbage and the company absolutely doesn’t stand behind it. Even with an endocrinologist saying this overpriced paperweight isn’t accurate they wouldn’t replace it. I don’t know if the ketone readings are accurate, but my KETOSCAN is almost always higher than this toilet. I DO know the glucose readings are absolutely junk. On average they show 20-30mg/dl higher than an accucheck device. I’m a Veteran who has been exposed to multiple chemical warfare agents, one of the side effects of the exposure is diabetes so even though I have no family history of diabetes, seeing readings consistently in the “pre diabetic/diabetic” ranges was terrifying. I’ve already survived bladder cancer 5x, I definitely wasn’t looking forward to fighting diabetes! After seeing an endocrinologist because of the absurdly high numbers, she checked my glucose and I was at 89mg/dl which seemed a lot more likely since I DON’T EAT SUGAR BECAUSE OF MY FIGHTS WITH CANCER. The accucheck confirmed this measurement, and the overpriced piece of garbage these people sell returned a 111mg/dl reading. Ken with customer service said as long as the control samples are “within normal range” the device is not defective, so he refused to replace it and stopped responding to my correspondence. DO NOT WASTE YOUR MONEY ON THIS!!!! What a terrible company and terrible item. Zero integrity. They should be ashamed of themselves.