FDA clears innovative blood test for earlier Alzheimer's diagnosis

The U.S. Food and Drug Administration (FDA) has cleared for marketing an innovative blood test with underlying technology invented at Washington University School of Medicine in St. Louis for the early diagnosis of Alzheimer's disease. The test, known as PrecivityAD2, was developed and validated by C2N Diagnostics, a WashU startup company.

PrecivityAD2 is a blood-based diagnostic test cleared by the FDA to aid in identifying the presence of amyloid plaques in the brain associated with Alzheimer's disease in certain patients. Unlike some other FDA-cleared blood-based tests that use immunoassay methods to analyze biomarkers associated with Alzheimer's, PrecivityAD2 uses high-resolution mass spectrometry to provide quantitative measurements of the biomarkers.

The availability of blood-based biomarker testing may help clinicians evaluate patients for Alzheimer's disease using a less invasive approach than cerebrospinal fluid testing. Biomarker information may also help inform appropriate clinical management when interpreted together with a patient's clinical history and other diagnostic information.

Early detection of Alzheimer's disease is important since the first treatments capable of slowing the progression of the neurodegenerative disease recently became available to patients, and these drugs are more effective when started sooner rather than later. Other promising investigational drugs are in the pipeline.