Medically reviewed by Anju Goel, MD A mean platelet volume (MPV) test measures the average size of platelets in your blood. Platelets are blood cells that your bone marrow makes. Healthy platelets ...

Quest Diagnostics has signed up to offer a blood test that can help diagnose Alzheimer’s disease, following its FDA clearance ...

Quest will offer the first FDA-approved blood test to help detect Alzheimer’s-related amyloid pathology in patients with ...