[sithadmin]

The most simple test is to use a continuously logging pulse oximeter (not an intermittent-sample type like found on some smart watches; also worth nothing continuous-logging sports watches at the high end of the market are usually very unreliable at O2 sat monitoring insuring sleep). Look for drops in O2 saturation dipping into the low 90s/high 80s intermittently. If you see them, you probably have an apnea issue.

That said, the over the counter devices that can do this reliably generally cost half as much (or more) as an at home sleep test.