New blood tests could help doctors diagnose Alzheimer’s disease faster and more accurately, researchers reported Sunday – but some appear to work far better than others.
It’s tricky to tell if memory problems are caused by Alzheimer’s. That requires confirming one of the disease’s hallmark signs — buildup of a sticky protein called beta-amyloid — with a hard-to-get brain scan or uncomfortable spinal tap. Many patients instead are diagnosed based on symptoms and cognitive exams.Labs have begun offering a variety of tests that can detect certain signs of Alzheimer's in blood.
Blood testing was far more accurate, Lund University researchers reported Sunday at the Alzheimer's Association International Conference in Philadelphia. The primary care doctors' initial diagnosis was 61% accurate and the specialists' 73% — but the blood test was 91% accurate, according to the findings, which also were published in the Journal of the American Medical Association.There’s almost "a wild West" in the variety being offered, said Dr.
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