Valoración de dos pruebas inmunocromatográficas para la detección de anticuerpos frente a SARS-CoV-2

INTRODUCTION: Serological tests have been a valuable tool during the SARS-CoV-2 pandemic, supporting molecular methods for detection, and monitoring the immune response, caused by vaccination or by natural infection. Within all these techniques, rapid tests are interesting due to their ease of use, rapid response and low cost. METHODS: Two different immunological techniques were evaluated: Realy Tech and Mikrogen Diagnostik recom Line SARS-CoV-2 IgG. SARS-CoV-2 IgG II Quant antibody test and SARS-CoV-IgG assay, both from Abbott Diagnostics, were used as reference techniques. RESULTS: Mikrogen Diagnostik recom Line SARS-CoV-2 IgG shows the best results (S=0.985; E=0.839). Three techniques offered good positive predictive values, but Realy Tech and Healgen negative predictive values left to be desired. CONCLUSIONS: Mikrogen Diagnostik recom Line SARSCoV-2 IgG showed good results in the detection of antibodies against SARS-CoV-2 and could be used as an alternative to automated techniques