Harvard Mental Health Letter

In Brief: Possible blood test for Alzheimer's disease

In Brief

Possible blood test for Alzheimer's disease

Researchers at Stanford University have developed a blood test that, at least in a preliminary retrospective study, was highly accurate at determining who had Alzheimer's or was most at risk for it.

The researchers collected more than 200 stored blood samples that had been taken from people with mild cognitive impairment, Alzheimer's disease, or no cognitive impairment. They then analyzed 120 proteins in the blood samples, and found that a distinctive pattern of 18 proteins was useful in identifying the people with Alzheimer's. The proteins regulate normal functions, such as inflammation, that may go awry in Alzheimer's.

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