Two nasal swabs taken when I had symptoms did not give a positive result (Abbott Labs IDNOW test), so after I recovered I requested an antibody panel and was tested for COV-2 IgG and IgM. Tests were done on Abbott Labs equipment (though the results sheet did not specify the particular assay - there are 2). My results were a high multiple of what would be considered 'positive' for both and were consistent with the timeframe of my illness. More info here: https://www.fda.gov/medical-devices/coronavirus-disease-2019...

My insurance covered the cost of all my testing as it was done in conjunction with a televisit with my GP. I hear that it is available for approximately $60 if you just pay retail for it. If you give blood at your local blood bank, many are offering the antibody test as an incentive to donate.