biomarkers

Blood test predicts Alzheimer’s risk up to a decade early

A single blood test measuring levels of the biomarker p-tau217 can reliably predict which cognitively healthy older adults will develop Alzheimer's-related cognitive impairment years before symptoms appear, according to a large-scale study published July 14 in JAMA and presented at…

Blood test helps primary care doctors diagnose Alzheimer’s with 90% accuracy, study finds

A blood test measuring Alzheimer's disease biomarkers enabled primary care physicians to diagnose the condition with roughly 90% accuracy — nearly matching specialists — according to new real-world data presented at the Alzheimer's Association International Conference (AAIC) 2026 in London…