Thank you for your in-depth reply.
I am a grateful student here.
Thank you also for your time, and the language you chose so I [we] can understand. I say this as a native English speaker.
Detection limits and test sensitivities are something I pay attention to at one of my day jobs (working for environmental engineers). Presence/absence and detect/non-detect data points are what we look at re pollution of soil and water.
And just as it is the rule re water and soil sample data, I can guess that as the test sensitivity for SARS-CoV-2 increases, the amount of time and money to conduct the testing also increases. I get that HCWs don’t have the luxury of time and that cost-benefit curve is A Thing.
ETA: grammar (again)