To investigate the persistence of T cell- and antibody-mediated immunity following SARS-CoV-2 immunisation (by vaccination or infection), T-Track® SARS-CoV-2 and recomLine SARS-CoV-2 IgG test results were analysed in vaccinated and/or COVID-19 convalescent donors according to the time from the last recorded exposure to S1 or NP antigen. The gene discussed is PSMD1; the disease is COVID-19.