Blood tests 'unlikely' to diagnose Alzheimer's disease
10 March 2014 Last updated at 10:00 GMT
Claims that blood tests can accurately predict the onset of Alzheimer's disease are "too optimistic", Alzheimer's Research UK's Dr Simon Ridley has said.
Dr Ridley explained to BBC Radio 4's Today programme that "larger studies" are needed that take into account a "wider" range of population type before any reliable conclusions can be drawn.
He added that the blood tests are likely to be "more useful" for research purposes rather than clinical diagnosis.
First broadcast on BBC Radio 4's Today programme on Monday 10 March.