The photos below are COVID-19 antibody rapid tests that I ran in my office, ten days after the second Pfizer vaccination. The one on the left is from Premiere Biotech, and the one on the right is from Sure Biotech. These tests work with the spike protein, so they are suitable to check for antibodies to the virus, either from a previous infection or from vaccinations. The band next to the IgG and the G on these rapid tests shows that there are IgG antibodies specific to COVID-19. I’ll run periodic tests to see how long the immunity lasts.