
New Blood Test Detects Alzheimer's with 90% Accuracy as Scottish Researchers Lead the Way
A simple blood draw could replace invasive spinal taps and costly brain scans, bringing Alzheimer's diagnosis to your GP's surgery
For decades, getting a definitive Alzheimer's diagnosis has meant one of two things: an expensive PET brain scan or an invasive lumbar puncture. Both require specialist hospital settings. Both are uncomfortable, time-consuming, and often inaccessible.
That could be about to change.
A blood test called PrecivityAD2, developed by US diagnostics company C2N, has demonstrated over 90% accuracy in detecting Alzheimer's disease pathology — matching the performance of those far more invasive procedures. A landmark study published in the Journal of the American Medical Association (JAMA) in July 2024 found the test was equally effective whether administered in primary care or specialist memory clinics.
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