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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%
  1. 2019 nCoV denotes 2019 novel coronavirus, IgM denotes immunoglobulin M, and IgG denotes immunoglobulin G. The above information about each antibody detection kit is obtained from the clinical trial results stated in its instructions