A major international study is exploring whether a quick finger‑prick blood test could help identify Alzheimer’s disease much earlier — and far more easily — than current methods.
More than 1,000 volunteers aged over 60 across the UK, US and Canada are taking part. Researchers are analysing three specific proteins in the blood that have been linked to Alzheimer’s, hoping these “biomarkers” can reveal who may be at risk long before symptoms appear.
Current diagnostic tools — such as PET brain scans or lumbar punctures — are accurate but invasive, expensive and rarely offered. Only around 2% of patients ever receive them. A simple at‑home test that can be posted to a lab could be a game‑changer.
Dr Michael Sandberg, a London GP whose mother had Alzheimer’s, joined the trial and described his negative result as “a huge relief”. But researchers emphasise that full results from all participants will be needed before the test’s accuracy is known.
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Request Your Free Estate Planning ReviewExperts say faster, easier diagnosis is becoming increasingly important as new treatments emerge. The Alzheimer’s Society has called early detection “a priority”, and several UK studies are now investigating how blood tests could be integrated into real‑world care.
The trial aims to complete in 2028 and includes volunteers with normal cognition, mild impairment and early‑stage Alzheimer’s, with at least 25% from under‑represented groups.
🧠 A Simple Finger Prick Test Could Change How We Detect Alzheimer’s
A major international study is testing whether a quick finger‑prick blood test could help identify Alzheimer’s much earlier — and without the need for invasive scans or lumbar punctures.
Researchers in the UK, US and Canada are analysing three proteins in the blood that are linked to Alzheimer’s. If successful, this could make early detection faster, cheaper and far more accessible, especially as new treatments begin to emerge.
One participant, Dr Michael Sandberg — whose mother had Alzheimer’s — said receiving a negative result was “a huge relief”. But full results from all 1,000 volunteers will be needed before scientists know how accurate the test really is.
The hope is that, one day, people could take this test at home and post the sample to a lab. That would be a huge step forward, given that only around 2% of patients currently get access to specialist diagnostic scans.
