COVID-19 IgM/IgG test kit (Colloidal Gold) This kit is used for the qualitative determination of COVID-19 IgM/IgG antibodies in human serum, plasma and venous whole blood samples in vitro. as an auxiliary diagnosis of COVID-19 infection. [Detection principle] This kit uses colloidal gold immunochromatography. Testing COVID-19 IgG antibody and COVID-19 IgM antibody in human serum, plasma and whole blood samples. The blood samples diluent containing COVID-19 IgG antibody and/or COVID-19 IgM antibody chromatography to colloidal gold binding pad, recombinant with colloidal gold marked COVID-19 antigen antibody, forming colloidal gold - antigen complex, chromatography to test area, combining to precoated anti-human IgG antibody and/or anti-human IgM antibody respectively, forming complexes in the test area and presenting red precipitation line. Unbound rabbit IgG colloidal gold bond chromatography to quality control line (C) combined with precoated sheep anti-rabbit IgG antibody presented a red precipitation line. If the samples do not contain COVID-19 IgG antibody and/or COVID-19 IgM antibody, there is no corresponding red precipitation line existed in the test area. A red precipitation line appears on the quality control line (C) no matter if there is COVID-19 IgG antibody and/or COVID-19 IgM antibody in the sample or not. [Storage and Stablity] 1. Store at 2ï½?30 for 18 months in a cool place, no direct sunlight and no freeze preservation. The test card and sample diluent should be used up in 1 hour after opening the package (opening temperature 10~30, humidity 25%~95%). 2. The date of production and the term of use are labeled.