alt Hacker News> Source: Have recently discovered this myself with a family member from their neurologist.
The reason this was detected is that such testing is a standard practice with new dementia patients—among many other tests that identify etiologies of dementia.
No need for a 'PSA'.
Definitely not the case, not in all regions, not even within the same country.
We only found out for my family member after the 3rd neurologist's opinion after ~2 years of this.
Not everyone does their professional due diligence - cue endless anecdata about the healthcare industry. It's good to just be aware.