The Galleri test, by American company GRAIL, can detect over 50 types of cancerous DNA with a simple blood test. How the cancer screening test works.

This article was reviewed by Darragh O’Carroll, MD. Understanding Blood Tests: How They Work and What They Can Tell You Blood ...

WASHINGTON (AP) — New blood tests could help doctors diagnose Alzheimer’s disease faster and more accurately, researchers reported Sunday — but some appear to work far better than others. It’s tricky ...