[tptacek]

Nobody is ever going to do that with this test, because the overwhelming majority of positive test results in a population-wide sample will be false, and the proposed diagnosis is devastating. This is a test for people who already have symptomatic dementia that helps confirm the diagnosis.

[Dylan16807]

Well this test isn't for whether you will get Alzheimer's, so that disqualifies it before we even consider the accuracy.

But apparently your odds go above 30% if you live long enough, so if you could test for being in that cohort I think that result would be too common to actually be devastating.