Over 1,000 UK residents with suspected dementia will participate in a trial using a new blood test for Alzheimer's. The test detects biomarkers for rogue proteins, aiming to increase diagnostic accuracy from 70% to over 90%. Currently, diagnosis relies on less accurate cognitive tests and expensive, rarely used brain scans. Researchers hope this £100 blood test, measuring p-tau217, will revolutionize diagnosis, enabling earlier intervention and improving the lives of patients and their families. Results are expected in three years.

Prepared by Olivia Bennett and reviewed by editorial team.