Don't know the difference between those tests, or how accurate they are. The nasal swab (PCR) tests can't delineate between the virus and the flu. That's why there were only a little over a thousand cases of the flu last winter. Everybody was diagnosed with Covid, even if they didn't have it.
I know.
What I have wasn’t normal flu. Really hasn’t been all that bad.
Ivermectin works.