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Do blood tests really help diagnose Alzheimer’s disease?

August 1, 2022

Ask the doctor

photo of a brain MRI test

Q. I hear there are new blood tests to help diagnose Alzheimer’s disease. Is that true, and do they really help?

A. Several types of tests can help doctors diagnose Alzheimer’s disease. That may not sound like a big deal, but when I was a young physician the only way to diagnose Alzheimer’s was to examine the brain after a person had died. That’s too late.

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