Early detection, we’re often told, is the surest way to beat cancer. It’s the reason why, year after year, men and women of a certain age dutifully visit their doctors and undergo uncomfortable tests to screen for things like prostate and breast cancer. But what about the other hundred or so types of cancer out there—the brain cancers, the ovarian cancers, the leukemias and lymphomas? And what of the millions of young people who never get tested at all, even though they’ve been found to have worse outcomes than adults? Current diagnostic methods for other cancers are invasive and expensive, so the vast majority of cancer patients never realize they might have cancer until something goes wrong with their health. By that point, in many cases, it’s already too late. That’s why a new startup, dubbed Miroculus, is building a device that could easily and affordably check for dozens of cancers using a single blood sample.