Department of Blood Transfusion Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
Department of Laboratory Medicine Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
Department of Laboratory Medicine Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
Department of Laboratory Medicine Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China;
COVID-19; SARS-CoV-2; IgG; IgM; chemiluminescence;