03 Aug Detecting Alzheimer’s in the Blood
CHICAGO, JULY 28, 2020 —A simple blood test for Alzheimer’s would be a great advance for individuals with — and at risk for — the disease, families, doctors and researchers.
At the Alzheimer’s Association International Conference®(AAIC®) 2020, scientists reported results of multiple studies on advances in blood “tests” for abnormal versions of the tau protein, one of which maybe able to detect changes in the brain 20 years before dementia symptoms occur. In particular, the reports focus on a specific form of tau known as p-tau217, which seems to be the most specific to Alzheimer’s and the earliest to show measurable changes…..
As reported at AAIC 2020, an international team of researchers have identified a highly accurate,blood-based biomarker for the detection of Alzheimer’s disease by measuring levels of p-tau217 in blood, and validated the finding in multiple, diverse populations. The scientists found that, “the diagnostic precision of blood p-tau217 was as high as established diagnostic methods, including positron emission tomography (PET) imaging and cerebrospinal fluid biomarkers, which are invasive, costly and less available.”
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