Assay+ Coivd 19 Neutralizing antibody rapid test is manufactured in Canada to detect specific Covid 19 neutralizing IgG for the healthcare providers. Assay+ neutralizing Covid 19 antibody Rapid Test Kit is qualitative test device, but it can monitor the neutralizing antibody titer. This test can detect the neutralizing antibody from human serum, plasma, whole blood or finger tip blood. This device has been used by our end customers with good feedback.