Detection of serum immunoglobulin M and immunoglobulin G antibodies in 2019 novel coronavirus infected patients from different stages

Furthermore, three different immunological assays, chemiluminescent immunoassay (CLIA), gold immunochromatographic assay (GICA), and enzyme-linked immunosorbent assay (ELISA) were used for IgM and IgG detection. All patients were confirmed by reverse-transcription polymerase-chain-reaction assay (2019-nCoV RNA Test Kit, Daan Gene Company, China) for nasal and pharyngeal swab specimens, and were treated according to the national diagnosis and treatment plan. The clinical features and laboratory results were collected from electronic medical records.