I’d actually be interested in having an antibody test, and hope to get one when I see my doc in a few weeks.
I have a suspicion that many of us have been infected by this, but have never developed symptoms - and many were perhaps infected far earlier than anyone thinks, especially if we life in metropolitan areas or travel a lot.
It’s definitely possible. If you had it more than a few months ago the antibodies might not be at detectable levels any more, especially if you had a very mild or asymptomatic case.