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First blood test to help diagnose Alzheimer's disease goes on sale

Updated: Mar 29, 2023

A company has started selling the first blood test to help diagnose Alzheimer’s disease, a leap for the field that could make it much easier for people to learn whether they have dementia. The test is not intended for general screening or for people without symptoms – it’s aimed at people 60 and older who are having thinking problems and are being evaluated for Alzheimer’s.

Independent experts are leery because key test results have not been published and the test has not been approved by the U.S. Food and Drug Administration – it's being sold under more general rules for commercial labs. But they agree that a simple test that can be done in a doctor’s office has long been needed.

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