Quest Diagnostics

New Capabilities

Offering blood tests including direct-to-consumer options

For decades, diagnosing Alzheimer's meant either a $5,000 brain scan with radiation exposure or a painful spinal tap. In October 2025, the FDA cleared Roche's blood test for use in primary care—a simple blood draw that rules out Alzheimer's 97.9% of the time. It's the second blood test approved in five months, transforming a diagnosis that once required specialists and imaging centers into something your family doctor can order.

Updated Jan 9