Methods for aiding in the diagnosis of Alzheimer's disease by measuring amyloid-amp;bgr; peptide (x-amp;gE;41)

摘要

This invention provides methods useful in aiding in the diagnosis of Alzheimer's disease. The methods involve measuring the amount of amyloid-. beta. peptide (x-≧41) in the cerebrospinal fluid of a patient. High levels of the peptide generally are inconsistent with a diagnosis of Alzheimer's. Low levels of the peptide are consistent with the disease and, with other tests, can provide a positive diagnosis.