Antigen test vs. Antibody testSona's test is an antigen test. Every other test that I've read about are antibody tests. Antigen test is very specific to covid-19. Rapid antibody tests cannot distinguish between covid-19 and other similar viruses that cause flu. That's why many rapid antibody tests are unreliable. They give false negatives and false positives. Sona's antigen test is very specific and does not give these false negatives and false positives, making it more reliable. They being said, we need news out soon. There are announcements of new tests every week. These tests though unreliable, are taking market share. Sona's announcement would become just another announced test, making it harder to differentiate from other tests.