New test promises earlier detection of dementia onset

The new test accurately predicted onset of dementia up to nine years before an official diagnosis. (Glenn Hunt/AAP PHOTOS)

A new test promises to predict whether someone will get dementia, almost a decade before diagnosis.

An international research team, including Associate Professor Adeel Razi from Melbourne's Monash University, have developed a new method for predicting dementia with over 80 per cent accuracy.