Question 227 of 433
What is the Galleri test, and how does it work?
The short answer
It is a blood test that looks for fragments of DNA shed by tumors and can signal more than fifty types of cancer, most of which have no screening test at all.
Cancer cells release DNA into the bloodstream carrying abnormal chemical tags. The test reads those tags, reports whether a “cancer signal” is present, and predicts where in the body it likely comes from. It belongs to a new class called multi-cancer early detection tests.
The promise is real. About 70 percent of cancer deaths come from cancers we have no routine screening for: pancreas, ovary, liver, stomach, esophagus, and others.
“This book is for education. It is not medical advice, and reading it does not make you my patient or create a doctor-patient relationship.” From the book’s medical disclaimer. Full disclaimer
DIAGNOSTIC VALIDATION — Screened adults: cancer-signal detection; ability to detect is not proof of lower mortality.Evidence grade (draft mapping)Grade pendingPart 16, Q227 · Part sources
From Longevity Unmasked by Afshine Ash Emrani, MD, FACC. Medical disclaimer. This book is for education. It is not medical advice, and reading it does not make you my patient or create a doctor-patient relationship. Nothing here is meant to diagnose, treat, cure, or prevent any disease. Medicine is personal: a test, drug, supplement, or exercise plan that helps one person can harm another. Do not start, stop, or change any medication or treatment because of something you read in these pages. Talk with a licensed clinician who knows your history first. If you think you are having a medical emergency, call 911. The author disclaims responsibility for any loss or harm arising from use of the information in this book.