I had multiple antibody tests over the years. I take a nasal spray which binds to the position of the cell where the virus enters. My ENT prescribed it for something else and it worked against sars-cov-2. It works against other respiratory viruses too. pmc.ncbi.nlm.nih.gov/articles/PMC...
Yes. I use the same nasal spray. Although I might have had COVID. They were out of tests when I got sick 😂. Because of the public nature of my health services, I have not asked for an antibody test. I didn’t feel worth the money for me. No one got sick from me.
My ENT and Primary Care doctor have asked their patients and none of them had gotten covid that were using the nasal spray. Even if you did get it, you would probably only have had it for about 3 days, but if nobody else got it from you, you probably didn't get it and maybe got something else.
That was at the height of the transmission rate and someone in my bubble got it from caring for a parent who got COVID from going on a cruise. So she was extending the bubble But we saw each other once and I was masked. I’ll probably never know