Zidazi zimapangidwira kuti zizizindikirika bwino za SARS-CoV-2 IgG antibody mu zitsanzo za anthu za seramu / plasma, magazi a venous ndi magazi aku chala, kuphatikiza ma antibody a SARS-CoV-2 IgG omwe ali ndi kachilombo kachilengedwe komanso katemera.