Patients say they want Alzheimer’s blood tests. Doctors aren’t sure they help.​Patients say they want Alzheimer’s blood tests. Doctors aren’t sure they help. 

 The idea is straightforward: Take a blood test now, even without symptoms, and learn if you could some day develop Alzheimer’s disease  ​​The idea is straightforward: Take a blood test now, even without symptoms, and learn if you could some day develop Alzheimer’s disease