COVID-19 Antibody (IgG)


SARS-CoV-2 Serology (COVID-19) Antibody (IgG), Immunoassay - Detection IgG antibodies may indicate exposure to SARS-CoV-2 (COVID-19). It usually takes at least 10 days after symptom onset for IgG to reach detectable levels. An IgG positive result may suggest an immune response to a primary infection with SARS-CoV-2, but the relationship between IgG positivity and immunity to SARS-CoV-2 has not yet been firmly established.  Antibody tests have not been shown to definitively diagnose or exclude SARS-CoV-2 infection. Positive results could also be due to past or present infection with non-SARS-CoV-2 coronavirus strains, such as coronavirus HKU1, NL63, OC43, 229E. Diagnosis of COVID-19 is made by detection of SARS-CoV-2 RNA by molecular testing methods, consistent with a patient's clinical findings.


COVID-19 Antibody (IgG)


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Reference Range(s)


Alternative Name(s)

COVID19,Novel Coronavirus,nCOV,Wuhan,Coronavirus

  • Fasting Required: NO
  • Preferred Specimen: Serum
  • Turnaround Time: 3-7 Days
  • Test Code: 39504