Yes and no. If your COVID-19 test results show the presence of IgG antibodies, this means you have been exposed to the virus in the past. In the event you are exposed again, these antibodies will lessen the chance of re-infection. Scientists are still researching how many IgG antibodies are needed for immunity and how long COVID-19 immunity lasts. COVID-19 is new and still being studied, so experts cannot yet be absolutely certain about issues like immunity. But this testing protocol is supported by the medical community’s current best understanding.