![]() This test can be done after you test positive for binding antibodies. Not yet widely available, a newer and more sensitive test detects a subgroup of antibodies that may inactivate the virus. But they don't indicate how extensive or effective your immune response is. These widely available antibody tests detect whether you've developed any antibodies in response to a COVID-19 infection. ![]() Studies on COVID-19 antibodies as well as other components of the immune system are ongoing to learn more about immunity.Īntibody tests may detect certain types of antibodies related to the COVID-19 virus: Though rare, there are some confirmed and suspected cases of reinfection. Although these antibodies probably provide some immunity to the COVID-19 virus, there's currently not enough evidence to know how long the antibodies last or to what extent past infection with the virus helps protect you from getting another infection. ![]() After infection with the COVID-19 virus, it can take two to three weeks to develop enough antibodies to be detected in an antibody test, so it's important that you're not tested too soon.Īntibodies may be detected in your blood for several months or more after you recover from COVID-19. Your immune system - which involves a complex network of cells, organs and tissues - identifies foreign substances in your body and helps fight infections and diseases. Antibodies are proteins produced by your immune system in response to an infection.
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