Scientists leading the trial at University College London believe the blood test could improve the accuracy of diagnosis of the disease to more than 90%.

New test, plasma p-tau217, could revolutionise diagnosis of the condition

Only two thirds of people with dementia have a diagnosis for the memory robbing condition in the UK

More than 1,000 patients to take part in trial to see if the approach leads to faster and more reliable diagnoses

Scientists leading the trial at University College London believe the blood test could improve the accuracy of diagnosis of the disease to more than 90%.