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Finger-Prick Blood Test Triage Targets Alzheimer’s Risk at Home

5/6/2026

Summary

Story summary

University of Exeter researchers created a finger-prick blood test with online cognitive assessments to triage Alzheimer’s risk.
The test measures p-tau217 and GFAP, biomarkers linked to Alzheimer’s and brain degeneration.
Only one in a thousand people with brain decline receives specialist evaluation, exposing a dementia-care gap.
NIHR director Marian Knight said the home-based test could ease NHS pressure, though Alzheimer’s Research UK’s Sheona Scales warned that broader trials are needed.

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Story summary

University of Exeter researchers created a finger-prick blood test with online cognitive assessments to triage Alzheimer’s risk.
The test measures p-tau217 and GFAP, biomarkers linked to Alzheimer’s and brain degeneration.
Only one in a thousand people with brain decline receives specialist evaluation, exposing a dementia-care gap.
NIHR director Marian Knight said the home-based test could ease NHS pressure, though Alzheimer’s Research UK’s Sheona Scales warned that broader trials are needed.