Methods of diagnosing or prognosing Alzheimer's disease in a subject are disclosed. The method involves detecting the presence or absence of an apolipoprotein E type 4 (ApoE4) isoform or DNA encoding ApoE4 in the subject. The presence of ApoE4 indicates the subject is afflicted with Alzheimer's disease or at risk of developing Alzheimer's disease.
METHODS FOR DETECTING ALZHEIMER'S DISEASE