New Blood Test for Alzheimer’s Offers 95% Accuracy in Early Detection

HEALTH & WELLNESS

By Aniket Chakraborty June 10, 2025 Arrow

The test measures two key proteins: amyloid beta 42/40 and p-tau217.

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These proteins are linked to amyloid plaque buildup—a hallmark of Alzheimer’s.

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Researchers at Mayo Clinic tested over 500 people at an outpatient memory clinic.

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The test showed 95% sensitivity and 82% specificity—both high diagnostic standards.

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It’s as accurate as spinal fluid tests but far more convenient and cost-effective.

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Approved by the US FDA, the test could soon reshape global dementia diagnostics.

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UK experts say it could drastically reduce delays and invasiveness in diagnosis.

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The Blood Biomarker Challenge aims to bring these tests to the NHS by 2029.

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Experts call it a breakthrough that brings hope for faster care and future cures.

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