This test may be able to tell you have you have already had Covid-19. This is not the test you take if you think you currently have Covid-19. It is neat that this antibody test will be readily available at Kroger pharmacies and priced at about $25.
My doctor tells me I was ill with Covid-like symptoms last March and suggested I get an antibody test late last spring. I skipped that because it was expensive then ($125), the test accuracy was questionable, and the result of the test was not actionable. (At that time, “experts” were saying we didn’t know if you antibodies would be protective.) But at $25 today, I might do that.