Table 1 Technical parameters of kit A and B kit
From: Analysis of 4 cases of children with false-positive results of novel coronavirus-specific antibody
Name | Company | Targeted antigen | Detected antibody | Sensitivity | Specificity |
|---|---|---|---|---|---|
A. 2019-nCoVIgM /IgG antibody detection kit (colloidal gold method) | INNOVITA Biotechnology Co., Ltd. (Tangshan) | Fused segment of N protein and S protein | Combined detection of IgM and IgG | 87.3% | 100% |
B.2019-nCoV IgM /IgG antibody detection kit (colloidal gold method) | ZHU HAI LIVZON DIAGNOSTICS INC., | Fused segment of N protein and S protein | Separate detection of IgM and IgG | IgM: 79.0%, IgG: 84.3%, Combined: 90.6% | IgM: 99.7%, IgG: 99.4%, combined: 99.2% |