What your COVID-19 antibody test results really mean

Jacksonville, FL — The test looks for antibodies in your blood, which your immune system makes to fight off infections, but if you test positive that doesn’t mean you’re now immune to the virus.

Dr. Matthew Thompson, the director of telescope health, said that researches still don’t know if you’re protected.

"I wish I could definitively say that having the presence of the antibodies, you have long-term immunity," Thompson said.

A positive result would make you eligible to donate convalescent plasma.

Susan Forbes, the senior vice president of corporate communications and public relations for OneBlood, told us doctors are using the plasma from recovered COVID-19 patients to treat those patients who are sick.

"By identifying more people with the antibody, it will only further ensure that a ready supply of convalescent plasma is ready at all times," Forbes said.

Doctors said if you test negative, it could mean that you were never infected with COVID-19 or you were, at one point, producing the antibodies and lost them over time.

Or it could mean you were infected and your immune system never made antibodies or just didn’t make enough for a test to detect.

Health experts said regardless of if you test positive or negative for antibodies, you should still follow guidelines from the Centers for Disease Control and Prevention by practicing social distancing, wearing mask and practicing good hygiene.

If you donate blood at OneBlood, you can also be tested for COVID-19 antibodies.