The first-ever blood test to detect Alzheimer’s disease has been cleared by the U.S. Food and Drug Administration (FDA).In a Friday press release, the agency announced its approval of the first in-vitro diagnostic device, Lumipulse.The method is intended for early Alzheimer’s detection in adult patients over the age of 55 who are exhibiting signs and symptoms of the disease.ALZHEIMER'S DISEASE COULD BE PREVENTED ANTIVIRAL DRUG ALREADY ON MARKETThe new technology works by detecting amyloid plaques in the brain, a telltale sign of Alzheimer’s.While PET scans can pick up these plaques, they can be "costly and time-consuming" while exposing patients to