A New Alzheimer’s Blood Test: A Diagnostic Breakthrough For decades, the path to a definitive Alzheimer’s disease (AD) diagnosis has been challenging, relying on a combination of cognitive testing, expensive PET scans, or invasive lumbar punctures . A reliable and accessible blood test has long been a primary goal for the field, promising to significantly improve the diagnostic process for both patients and clinicians. A landmark new study from researchers at the Mayo Clinic, published in Alzheimer’s & Dementia, shows that this goal is moving firmly into clinical reality. Their work validates a powerful new blood test using plasma-based biomarkers — marking a significant step forward for both clinical and legal communities. The Breakthrough: A Blood Test with Near-CSF Accuracy Critically, the study evaluated the performance of plasma biomarkers in a real-world setting — a cohort of over 500 patients from an outpatient memory clinic. This population reflects the true...
