ncbi.nlm.nih.gov/pmc/articl...
If you are considering spending good money on one of the antibody testing kits that are commercially available, I thought perhaps you might like to read this article. She concludes that "Commercial tests that promise to measure your immune response aren't very useful, at least for now"
Better and safer to wait a bit and possess your soul in patience as my mother would have said. Once the controversial "herd immunity" is achieved and providing the vaccine remains effective against all variants, we too will be safe to resume rather more activities. In the meantime - be picky about your friends, let only doubly vaccinated close and still wear a mask.
I am adding DL's post with the link to the study:
If you are part of the Covid Symptoms study group (primarily UK) you may well be invited to have an antibody test.....post both vaccines. Free of charge.
The study was initially set up to gather information regarding COVID symptoms ( as the name implies) but has now moved on to gather information on all things vaccines...
and still looking for more volunteers - see attached