this test is not the end all be all. Unfortunately. It can give false positives if an m ANY OTHER type of infection is present. Here is an excerpt from another company using colloidal gold testing kits. ....."Sona's Covid-19 test will offer a unique advantage over other lateral flow tests as it detects the presence of the Covid-19 virus. To date, the only competitive lateral flow tests that have been announced for sale are serological assay tests, which are designed to identify IgM and IgG antibodies present post infection. Serological tests are susceptible to producing false positive and false negative results if a patient is suffering from any one of a variety of unrelated infections (I.e. ear or tooth infection, regular flu, etc.). Sona's test is being developed to indicate a positive result only when the Covid-19 virus is present, allowing for direct and clear interpretation.