Antibody tests can show if one is immune to COVID-19 or Coronavirus, but is it possible that it can also detect that a fully vaccinated person has reached immunity?
Different serology tests may detect antibodies to different parts of the virus, so while an antibody test may not be 100% accurate at identifying your immunity against COVID-19, there is still a strong possibility that it can help provide confirmation.
What is a COVID-19 Antibody Test?
A COVID-19 antibody test tests the blood to help identify individuals who may have developed an immune response after infection with SARS-CoV-2, thus producing antibodies against Coronavirus.
A positive result shows that you have been infected with COVID-19 in the past or maybe currently infected, even if you were asymptomatic. It is important to stay home and practice the COVID-19 protocols set by the CDC to reduce possible exposure to others. If you test positive, we also suggest taking a PCR test to ensure there is no active virus in the body.
A negative result shows that you have not recently been infected with Coronavirus. This does not mean that you have never been infected or that you are not currently infected, however. After being infected, it can take one to three weeks to detect any antibodies. After a few months, antibody levels could be so low that there may not be any detection at all.
It is important to remember that there are currently no COVID-19 tests that are 100% accurate, and there remains room for a possibility of false positives or false negatives.
If I am Fully Vaccinated, Can an Antibody Test Prove I am Safe from COVID-19?
Health experts have said that it would be extremely rare to have no antibodies after receiving the vaccine. There is currently not enough data, as most fully vaccinated individuals do not continue to search for COVID-19 tests. If you are fully vaccinated and are interested in an antibody test, it is best to wait at least two weeks after your final vaccination shot.
Most antibody tests detect either two proteins caused by SARS-CoV-2:
- Nucleocapsid (N) protein
- Spike (S) protein
There has been a new antibody test, “Spike Protein Antibody Test,” which can help determine if your body has produced antibodies after receiving a vaccine. Through a simple blood draw, the test will search for spike proteins which may present themselves after receiving your COVID-19 vaccine.
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DEFEN95 is an approved center for COVID-19 testing. We specialize in the PCR test, rapid antigen test, and rapid antibody test. Whether you are searching for employee testing for your business or guest testing for a wedding or special event, we will set up at your designated location at zero out-of-pocket costs for you. To book your appointment for our on-site testing center, send us an inquiry!