Blood Test Can Detect Alzheimer’s Years Before Symptoms Appear

A blood test developed by Melbourne University researchers can detect Alzheimer’s disease years before symptoms become apparent, a study has shown. Researchers made the finding after testing 100 people for genetic material called microRNA, which circulates in the bloodstream.

They found that people with Alzheimer’s disease, or likely to develop it, had a particular genetic signature which distinguishes them from healthy people. Researchers studied the blood of 100 people, whose average age was 80, as part of the study, published on Tuesday in the journal Molecular Psychiatry.

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