An antibody (also known as an immunoglobulin) is part of our body’s response to a foreign molecule or pathogen (also known as an antigen) such as a virus or bacterium. This is valuable to fight off infection. Protective antibodies can provide immunity, so we do not become reinfected with the same viruses or bacteria. Antibodies are vital for our health. The protection antibodies provide may last a lifetime, or only a matter of months. And we don’t always develop antibodies—or the right antibodies in sufficient quantity—to fight off all infectious diseases. It is not yet known how much protection the SARS-CoV-2 antibodies may provide, or for how long.
Quest Diagnostics offers antibody testing for COVID-19 that is completed through a traditional venipuncture blood draw. Employers can offer antibody testing as part of routine biometric screening programs, with the availability for on-site collection and collection at Quest Diagnostics Patient Service Centers.