Tecan’s SARS-CoV-2 S1/RBD IgG Ab ELISA is a quantitative test detecting IgG antibodies directed against the SARS-CoV-2-S1 spike protein’s receptor binding domain (RBD), which helps to determine immune ...

1, and the South Africa variant B.1.351. A subset of the mutations identified in the RBD domain of the spike protein occurs in more than one strain, although the three variants are believed to be ...