 Screenings, blood tests, a gene for Alzheimer's and what you can do to help prevent it if it does show up. I want to know about the Grail test. They call it the Holy Grail. What is the technical name for that test, Dr. Kelly? Yeah, so the Grail test is what you call a liquid biopsy. And what is, what does it do exactly? Yeah, so basically you get a blood sample and within that blood sample, what you're looking for