If you are worried about your pet's health, you take them to a vet. But for those who want a more DIY diagnosis of how a dog or cat is doing, a company called Scanostics has made a device to measures levels of chemicals in urine, as a proxy for health. Petnostics, as its called, consists of a device and an app. The device is a strip atop a pee cup, with chemical-sensitive boxes that change color when exposed to certain chemicals. The strip can then be photographed with a smart phone, and the Petnostics app then analyzes the image of the strip, and tells you for example how much bilirubin is in the blood, and if that's a problem.