You wait for years for a urine analysis company, then all of them hit their flow all at once. One of the notable trends at CES in Las Vegas this year was that the quantified-self movement is going deeper. No longer content with just measuring your heart rate, number of steps and EKG on your wrist, a new generation of startups is inching toward full-on medical-grade analysis of its users. Here are a few to keep an eye on: