Can the peanut butter test diagnose Alzheimer's Disease ?

The Journal of the Neurological Sciences reports on research completed at the McKnight Brain Institute Center for Smell and Taste at the Un of FL, Gainsville.

Since the part of the brain that controls the sense of smell 
is the first area to be affected by Alzheimer's Disease the researchers used the strong smell of peanut butter for their testing.

Research subjects, already diagnosed with Alzheimer's,
were not able to smell a spoonful of peanut butter when it
was just 2" from their nose.

Subjects not diagnosed  with Alzheimer's, were able to smell the same spoonful of peanut butter when it was placed seven inches from their nose.