You can get most tests (although often not genetic) in many countries, with Canada being an outlier in forcing you to get a doctor’s note for just about everything.

Really terrible in Canada. If you don’t have a family physician (like everyone I know), good luck making it through triage at the walk-in clinic because you want a test to see your baseline values or proactively check for deficiency. The “hack” is you can pay a naturopath to order tests but the tests are not covered by public insurance in this case (actually pretty expensive IIRC).

I’ve had good experiences with getmaple for random and quick doctors appts