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Nature Medicine

Capillary blood sampling for detecting biomarkers of Alzheimer’s disease

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Nature Medicine, Published online: 11 February 2026; doi:10.1038/s41591-026-04216-w Capillary blood sampling for the Alzheimer’s disease biomarkers p-tau217, NfL and GFAP correlates with venous measures for the same biomarkers. As capillary p-tau217 accurately classified amyloid burden, it might support remote assessment in large-scale epidemiology to estimate the prevalence of Alzheimer’s disease and enable triage into clinical services and trials.

Nature Medicine, Published online: 11 February 2026;

doi:10.1038/s41591-026-04216-w

Capillary blood sampling for the Alzheimer’s disease biomarkers p-tau217, NfL and GFAP correlates with venous measures for the same biomarkers. As capillary p-tau217 accurately classified amyloid burden, it might support remote assessment in large-scale epidemiology to estimate the prevalence of Alzheimer’s disease and enable triage into clinical services and trials.

— Source: Nature Medicine (https://www.nature.com/articles/s41591-026-04216-w)

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