Are there any limitations to COVID-19 antibody tests?

Getting an antibody test too soon after being infected may cause a false-negative result. Additionally, some individuals who are infected with COVID-19 may not develop detectable levels of antibodies, such as those with weakened immune systems due to a medical condition or certain medications.

This test may detect antibodies from previous exposure to coronaviruses other than COVID-19, which can cause a false-positive result.