The Food and Drug Administration has cleared the blood test to help diagnose Alzheimer's disease, potentially making it easier to find and treat patients.

The US Food and Drug Administration has given marketing clearance to a blood test to help diagnose Alzheimer’s disease, making the test the first to get signoff to aid in the early detection of the disease in the United States.

Experts say the test could dramatically improve access to earlier, more accurate diagnoses, particularly for older Americans experiencing memory and thinking problems.