[bradley13]

Maybe I've misunderstood something, but how can they know the accuracy of the test? It is the best test out there, so if it misses a diagnosis, how do they reliably catch the false negative?

[DavidSJ]

It’s one of the best blood tests. There are also PET scans, lumbar punctures (spinal taps), and postmortem analyses of brain tissue.

[WA]

Person has Alzheimer‘s (diagnosed by neurological assessment). Test this person with a blood test.

[MarcelOlsz]

If the patient forgets to follow-up. Badum tss. Thanks for the layup.

[smt88]

Besides being a bad joke, this is in terrible taste on a thread read by people with Alzheimer's patients in their lives, and it violates HN's rules that discussion should be valuable and inspire curiosity.

[junon]

This isn't Reddit.