How convenient for anyone seeking to take away all of our rights. The results of any tests may give a false negative. We just have to assume that everyone / anyone can spread the virus.
Antibody tests check your blood by looking for antibodies, which may tell you if you had a past infection with the virus that causes COVID-19. Antibodies are proteins that help fight off infections and can provide protection against getting that disease again (immunity). Antibodies are disease specific. For example, measles antibodies will protect you from getting measles if you are exposed to it again, but they won’t protect you from getting mumps if you are exposed to mumps.
Except in instances in which viral testing is delayed, antibody tests should not be used to diagnose a current COVID-19 infection. An antibody test may not show if you have a current COVID-19 infection because it can take 1–3 weeks after infection for your body to make antibodies. To see if you are currently infected, you need a viral test. Viral tests identify the virus in samples from your respiratory system, such as a swab from the inside of your nose.
If you test positive or negative for COVID-19 on a viral or an antibody test, you still should take preventive measures to protect yourself and others.
We do not know yet if people who recover from COVID-19 can get infected again. Scientists are working to understand this.
A guide to help you make decisions and seek appropriate medical care.
Guidance on Interpreting COVID-19 Test Resultspdf iconexternal icon: A guide for understanding test results and determining what actions to take.
Antibody tests for COVID-19 are available through healthcare providers and laboratories. Check with your healthcare provider to see if they offer antibody tests and whether you should get one.
If you get symptoms after the antibody test, you might need another test called a viral test.
Regardless of whether you test positive or negative, the results do not confirm whether or not you are able to spread the virus that causes COVID-19. Until we know more, continue to take steps to protect yourself and others.
Learn more about using antibody tests to look for past infection.