 The study aimed to develop serologic assays for detection of SARS-CoV-2 neutralizing, spike protein-specific, and nucleocapsid-specific antibodies using serum samples from patients with PCR-confirmed SARS-CoV-2 infections, other coronaviruses, or other respiratory pathogenic infections. The study validated and tested various antigens in different ELISAs and demonstrated that most PCR-confirmed SARS-CoV-2 infected person seroconverted by two weeks after disease onset. The results showed that commercial S1-IGG or IGA ELISAs were of lower specificity, and sensitivity varied between the two assays, the IGA ELISA showed higher sensitivity. Overall, the validated assays described can be instrumental for detection of SARS-CoV-2, specific antibodies for diagnostic, seroepidemiologic, and vaccine evaluation studies. This article was authored by Nisreen Amayakba, Marcella Muller, Winteli, and others. We are article.tv, links in the description below.