Doctors are hoping for something to use during routine exams, where most dementia symptoms are evaluated.
"We need something quicker and dirtier. It doesn't have to be perfect" to be useful for screening, said Maria Carrillo, the Alzheimer's Association's chief science officer.
It can't come too soon for patients like Tom Doyle, a 66-year-old former university professor from Chicago who has had two spinal fluid tests since developing memory problems four years ago. First he was told he didn't have Alzheimer's, then that he did. He ultimately was diagnosed with different problems — Lewy body dementia with Parkinson's.
A blood test — rather than subjective estimates of thinking skills — could get the right people into studies sooner.plaques in the brain that are the hallmark of Alzheimer's
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