The FDA has cleared the first blood test to diagnose Alzheimer's which works by measuring the amount of pTau 217 and beta-amyloid 1-42 in plasma.

The test may make it easier to identify whether people with memory and thinking problems have Alzheimer’s or not.

The FDA greenlit marketing for the first blood test to help diagnose Alzheimer’s disease. Experts believe this will increase access to Alzheimer’s detection and reduce reliance on expensive PET scans and invasive spinal taps.