Immunological methods to detect SARS-CoV-2 seroconversion in humans are important to
track COVID-19 cases and the humoral response to SARS-CoV-2 infections and
immunization to future vaccines. The aim of this work was to develop a simple chromogenic
magnetic bead-based immunoassay which allows rapid, inexpensive, and quantitative
detection of human antibodies against SARS-CoV-2 in serum, plasma, or blood.
Recombinant 6xHis-tagged SARS-CoV-2 Nucleocapsid protein was mobilized on the …