A lot's going on in the world of healthcare right now, and one topic that's especially relevant is how diagnostic labs work. In this episode with Dave King, Executive Chairman of Lab Corp (one of the largest clinical lab networks in the world) and a16z's General Partner Jorge Conde and Hanne Tidnam, we cover the evolution of the modern lab over the past 50 years, especially as new technologies and new tests are added; how tests go from specialized to mainstream and widely available; and who pays for most tests and how reimbursement affects all this. We also discuss where lab information flows—in electronic health records and in the health system at large—and touch on what the lab of the future might be like.