Kits;5PLATES;Streptavidin (SA) has an extraordinarily high affinity for biotin with a dissociation constant (Kd) on the order of 10−14 mol/L, the Biotinylated molecules can bind to the SA irreversibly. The SARS-CoV2 Spike protein RBD-Coated Plates are immobilized with biotinylated SARS-CoV2 Spike protein RBD to a Streptavidin tetramer protein coated plate, which is easy to use and widely available for applications.;Immobilized biotinylated SARS-CoV2 Spike protein RBD at 1 μg/mL (100 μL/well) on Streptavidin Coated Plates, Clear, 96-Well (Cat. No. SP-11), can bind anti-SARS-CoV-2 S1 antibody with a linear range of 0.1-2 ng/mL (QC tested).;Immobilized biotinylated SARS-CoV2 Spike protein RBD at 1 μg/mL (100 μL/well) on Streptavidin Coated Plates, Clear, 96-Well (Cat. No. SP-11), can bind ACE2 with a linear range of 0.2-4 ng/mL (QC tested).