First Alzheimer's disease risk assessment blood test for consumers hits market

Quest Diagnostics on Monday released the first blood test for consumer purchase that can help assess the risk of developing Alzheimer's disease.

The AD-Detect Test for Alzheimer's Disease costs $399 and is available for purchase online and can assess a person's risk based on a brain protein that contributes to the condition, according to Quest. 

Quest said its screening test uses plasma from a single blood draw to evaluate levels of amyloid beta proteins – which can form plaques in the brain and are linked to the progression of Alzheimer's disease...