Boston scientists find blood test can predict Alzheimer’s before symptoms

Boston scientists find blood test can predict Alzheimer’s before symptoms

BOSTON — The secret might be hidden in our blood. Boston researchers in a new study have found that a blood test can predict Alzheimer’s disease progression years before symptoms or brain scan changes. The Mass General Brigham scientists discovered that a blood test of plasma phosphorylated tau 217 (pTau217) can detect the earliest signals of Alzheimer’s disease in cognitively healthy adults. ...

Biomarker-based blood test signals Alzheimer’s years before onset - Health Care Today

A study suggests that a blood test measuring the biomarker pTau217 can detect early signs of Alzheimer’s disease years before symptoms or signs appear on brain scans. Higher pTau217 levels in cognitively healthy adults were linked to faster buildup of amyloid and tau proteins, as well as future cognitive decline. Changes in pTau217 often occurred before positive scans, suggesting it may be a more sensitive early detection tool. Low pTau217 level…