Cognitive Decline Can Start 20 Years Before Symptoms Appear. The FDA Just Cleared a Blood Test for Adults as Young as 40

The PrecivityAD2 test can screen adults decades before Alzheimer’s is typically diagnosed.

BY LUCIA AUERBACH, NEWS WRITER

The tools for catching Alzheimer’s early on just got even sharper. 

On Thursday, the U.S. Food and Drug Administration cleared C2N Diagnostics’ PrecivityAD2 blood test for use in adults as young........

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