New research indicates that they can now use a blood test to identify people with brain amyloid, a protein that’s a risk factor for developing Alzheimer’s. On Thursday, Dr. Reisa Sperling, director at the Center for Alzheimer’s Research and Treatment at Brigham Women’s Hospital, said the test is “very accurate.” Sperling said intervening in the disease before symptoms start would be a game-changer. If you’re interested in participating in the trial looking for a blood test to detect Alzheimer’s, they are currently enrolling patients through the website AHEADstudy.org. For now, they’re only taking patients 55 and older.