[mattzito]

I know this! It depends on the antibody test - if you can get a test for the nucleocapsid antibodies, that will determine whether you had the disease or not. People who are vaccinated will test positive for the spike protein, but will not test positive for the nucleocapsid antibodies, at least with the vaccines currently available (I believe there are vaccines in development that target both proteins, but not yet available).

Some antibody tests target spike or nucleocapsid, some target both, so you need to check which tests they are using and verify what it tests against (or ask your doctor to order a specific test that checks for the nucleocapsid antibodies).

I learned this when I was part of a vaccine study and was curious to know whether I had gotten the vaccine or the placebo, and was able to use a spike antibody test to confirm that I was in the vaccine group.