New test accurately picks up on memory problems by examining two proteins in blood plasma, US researchers find

A new blood test for Alzheimer’s disease can accurately detect people with early symptoms, research suggests.

Experts from the Mayo Clinic in the US have provided further evidence that blood tests can work to accurately diagnose dementia by examining two proteins in blood plasma.

The proteins – amyloid beta 42/40 and p-tau217 – are associated with amyloid plaque buildup, which is a hallmark of Alzheimer’s disease.

Researchers found the blood test was highly accurate, with 95% sensitivity, which means it was 95% accurate in picking up people with memory problems, with very few cases missed.