Finger-Prick Blood Test Shows Promise for Detecting Alzheimer’s Disease Biology

A simple finger-prick dried blood test accurately tracked Alzheimer ’s-related brain changes in research settings, pointing to a future role in widening access to early screening while confirmatory testing remains essential. In a recent study published in the journal Nature Medicine, a group of researchers evaluated whether dried capillary blood, collected as dried plasma spots (DPS) and dried blood spots (DBS), can accurately quantify Alzheimer’s disease (AD) biomarkers compared with venous plasma and cerebrospinal fluid (CSF).