Table 4.

Percentage of inhibition of the Spike:ACE2 binding.

		% of Binding Inhibition
Patient ID	Antibody Title	5 μL of Serum	10 μL of Serum	20 μL of Serum
1	96.6 AU/mL	98.6	99.5	99.6
2	170 AU/mL	99.3	99.4	99.3
3	89.4 AU/mL	98.1	99.3	99.4
4	125 AU/mL	98.8	99.3	99.4
5	146 AU/mL	95.7	96.9	97.3

Serum efficacy has been calculated in ACE2:SARS-CoV-2 Spike Inhibitor Screening Assay Kit as percent of inhibition of Spike RBD binding to ACE2 binding obtained using SPIKE at 5 nM, arbitrarily set as 100%.