pTAU 217

P-tau217 (phosphorylated tau at threonine 217) is a highly accurate blood-based biomarker that detects Alzheimers disease (AD) pathology, including amyloid plaques and neurofibrillary tangles, often years before symptoms appear. It acts as a superior, non-invasive alternative to PET scans or cerebrospinal fluid (CSF) tests, differentiating AD from other neurodegenerative conditions.