Study: Blood test for Alzheimer's detects signs 20 years before memory, thinking falter - USA TODAY

A new blood test accurately diagnosed Alzheimer's disease, but hurdles remain before the test is proven reliable for doctors and scientists. https://www.usatoday.com/story/news/health/2020/07/28/studies-show-new-blood-test-can-accurately-diagnose-alzheimers/5530470002/