What coronavirus antibody testing can and can't tell us

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Apr 21, 2020 What coronavirus antibody testing can and can't tell us Results from antibody testing studies for the coronavirus are starting to paint a picture of the scope of the disease it causes in parts of the U.S. If a person has a positive test for COVID-19 antibodies, it means that person has been infected with the virus at some point in the past. However, experts caution that a positive antibody test doesn't necessarily mean a person is immune and that it could take a year or more to determine how long immunity lasts. Read More Get the NBC News Mobile App Follow NBC News Check out all of NBCNEWS Newsletters here. Update Preferences | Unsubscribe | Contact | Privacy Update Preferences Unsubscribe Contact Privacy