 A simple blood test could one day diagnose a rare inherited form of Alzheimers disease, decades before symptoms of memory loss even appear. Researchers in Europe and the United Kingdom have now shown that cases of early-onset Alzheimers are associated with increasing levels of a biomarker in blood plasma. Alzheimers is a generalized term for ... This Biomarker Can Foreshadow Early Alzheimers Years Before... 