Frequently Asked Questions for Antibody testing
Has your antibody test been authorized by the FDA?
Yes, we offer a COVID-19 Total and IgG antibody (serology) test that has been
authorized by the FDA for use under an Emergency Use Authorization.
How long does it take to receive test results?
The COVID-19 antibody test results are typically delivered in 2 to 4 days. Upon taking
the test, our team will send you the information via secure portal to review the results.
What is the benefit to antibody testing?
The COVID-19 antibody test will determine whether you have been exposed to COVID-
19 or if your body has developed an immune response to the virus.
If you are positive for total antibody (IgM/IgG) the test will automatically reflex to IgG.
What does this mean?
Knowing this information will help your provider understand where your infection is in the viral load and if you need to take added precautions. If you are negative for antibodies you have not contracted COVID-19 and your physician can recommend a retest if your medical history warrants.
If I don’t have COVID-19 symptoms, should I get the antibody test?
We recommend the COVID-19 antibody test to anyone who has previously tested
positive for COVID-19, had a past history of COVID-19-like symptoms or is
asymptomatic but may have had close contact with a person who tested positive for
Why is the antibody test helpful?
Antibody tests can play a critical role in the fight against COVID-19 by helping health
care professionals identify individuals who may have been exposed to SARS-CoV-2
virus and may have developed an immune response. In the future, this may potentially
be used to help determine, together with other clinical data, whether these individuals
are less susceptible to additional SARS-CoV2 infections.
How are antibody tests performed?
Antibody tests are blood tests that are conducted through a simple blood draw. The
blood is then sent to a lab to be inspected for both IgM and IgG antibodies. IgG
antibodies are more likely to be detected approximately two weeks after the onset of
What does it mean if I have antibodies?
If you have antibodies to a virus, it means you’ve likely been exposed to components of
the virus previously, such as an infection. In general, antibodies may be used by the adaptive immune system to help fight off infections, including subsequent exposures to the same infection. For some infections, the presence of antibodies specific to a germ represents effective immunity against it. However, not all antibodies are able to produce immunity, and some antibodies will diminish over time. We don’t yet know the degree, if any, to which people with SARS-CoV2 antibodies are protected from getting COVID-19 in the future. Ongoing research is looking to answer these questions.
Do I have to get sick from COVID-19 to have antibodies?
No. In fact, research suggests there is a significant portion of the population that has antibodies to SARS-CoV2 without ever having become sick. In general, antibody production does require some form of exposure, and some people test positive for COVID-19 itself without showing any symptoms.
How long does COVID-19 antibodies last?
Due to limited data on COVID-19, there currently is no conclusive data on the levels of antibodies developed as result of a COVID-19 infection and the duration of immunity associated with these antibodies, if any. Studies to characterize antibody levels take significant time and require following patients after recovery from infection for weeks to decades. Immunity to infection must be considered at the individual and community levels. Further research is needed to determine the number of antibodies necessary for protection against future COVID-19 infections.
What does it mean if I have a negative antibody test result?
If you had a negative antibody test, no COVID-19 antibodies were detected in your body. This means it is highly likely that you have never had SARS-CoV2 exposure or infection. This can also happen if you are tested early in your illness and your body has not had time to produce antibodies to infection. Research shows that it can take up to two weeks after infection for IgG antibodies to be developed. IgM antibody can be detected sooner which means they have not moved through the infection stage of IgG.
What does it mean if I have a positive SARS-CoV2 antibody test result?
Here is a quick reference to testing results.
•A negative Total (IgM/IgG) antibody test together with a negative IgG test suggests no previous exposure.
•A positive Total (IgM/IgG) antibody test together with a positive IgG test suggests you have previously been exposed and may have developed an immune response to the virus.
•A positive Total (IgM/IgG) antibody test together with a negative IgG test suggests you have been exposed but may have not yet built up an immune response to the virus.