W ith two new treatments for Alzheimer’s disease approved in recent years, there’s growing hope for people at risk of the memory-robbing condition. But tests to detect the condition still lag behind. Earlier diagnosis would mean that people could take advantage of the drugs sooner, when the medicines are most effective.

A new blood test test could determine how far Alzheimer's has progressed and could also help confirm whether another condition is causing a person’s cognitive symptoms.

The new test could help identify which patients are most likely to benefit from new Alzheimer’s drugs. A newly developed blood test for Alzheimer’s disease not only helps confirm the presence of the condition but also provides information about how far the disease has progressed,