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Zika Virus IgG


If the body is infected with bacteria, viruses or any other harmful microorganisms, the immune system produces antibodies to fight the infection. IgG antibodies are produced in a delayed response to an infection and can be retained in the body for a long time. Testing for zika virus specific IgG antibodies can help to confirm a zika virus infection.

What might a high result mean?

Detection of IgG in the blood usually indicates a prior zika virus infection however, sometimes it is not possible to determine whether a positive IgG result (without IgM) is due to a recent Zika virus infection, a past Zika virus infection, or cross-reactivity from another flavivirus infection.