LA's Afternoon News with Rob Archer and Karen Adams discusses a new blood test that researchers say can detect Alzheimer's Disease before symptoms start. Claire Day is the chief programs officer for the Alzheimer's Association's Northern California Chapter.

LA's Afternoon News with Rob Archer and Karen Adams discusses a new blood test that researchers say can detect Alzheimer's Disease before symptoms start. Claire Day is the chief programs officer for the Alzheimer's Association's Northern California Chapter.

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