The problem with that is Alzheimer’s doesn’t really have something simple like that. For instance, you can’t say they have Alzheimer’s even if they have the elevated markers and brain decay if they don’t have symptoms. There are many cases where they should have symptoms, but don’t. Other cases where they have symptoms but no markers are present. That’s why it’s so hard to diagnose and make treatments for Alzheimer’s as the things we think are connected don’t seem to be the only factors.