SGTi-flex COVID-19 IgM/IgG is a gold nanoparticle-based immunochromatographic test kit for qualitative determination of COVID-19’s IgM and IgG antibodies in human whole blood (finger prick or venous), serum or plasma. The kits are accurate and easy to use and results can be observed with the naked eye within 10 minutes. The test detects the presence of antibodies, which are specific proteins made in response to infections. Antibodies can be found in the blood of those who are tested after infection. The antibodies detected by this test indicate that a person had an immune response to COVID-19, whether symptoms developed from infection or the infection was asymptomatic. Antibody test results are important in detecting infections with few or no symptoms. A lot of people don’t have symptoms. Because of that, quick diagnostics are very important. SGTi-flex COVID-19 IgM/IgG enables to help for community to identify infection and isolate people without symptoms but suspected COVID-19.