If you stop by the local MedExpress (or whatever doc-in-a-box serves your community) and ask for a Covid test, you're not going to be tested for variants. You'll get whatever Covid test has been used all along.
I suspect, however, that if the result is positive, you'll be told you have the Delta variant. Is it possible that there are no more regular old-fashioned Covid cases anymore, and all of the most recent positive test results are presumed to be Delta, Epsilon, or whatever they're going with next?
You know darn well they're making this up as they go along.