The $950 cancer blood test is here: 5 things to consider before ordering yours

Grail's $950 blood test isn't FDA-approved yet, but you can get one easily via telemedicine. Zoë Meyers for BI Multi-cancer blood tests are generally seen as the future of cancer detection. The promise is that with a few vials of blood, you could test for dozens of cancers at once. For now, the tests seem far better at picking up some cancers than others. Is a $950 test that searches for upwards of 50 types of cancer in your bloodstream worth it? That depends on who you ask. Grail, the Sili...