Zika Virus (IgM & IgG)

What is Zika Virus IgM/IgG?

Zika Virus IgM/IgG are blood tests that detect specific antibodies in your blood that your body produces in response to an infection with the Zika virus. IgM antibodies are usually the first to appear and indicate a recent infection, while IgG antibodies appear later and may indicate a past infection or long-term immunity.

Why should you test for Zika Virus IgM/IgG?

Testing for Zika Virus IgM/IgG is particularly useful for people who have traveled to or are traveling to areas where Zika is prevalent, pregnant women, or those exhibiting symptoms consistent with a Zika virus infection. It is also important for pregnancy planning, given the risks the virus can pose to fetal development.

What does it indicate?

The presence of IgM antibodies indicates recent exposure to the Zika virus, while IgG antibodies indicate a past infection. This test can help healthcare providers diagnose an active or past infection and advise patients on preventive measures and possible risks.

What does a high Zika Virus antibody level mean?

A high level of Zika Virus IgM suggests a recent infection, which is especially important for pregnant women due to the risks of transmission to the fetus. A high IgG level may indicate a past infection and potential immunity to the virus.

What does a low Zika Virus antibody level mean?

A low level of Zika Virus IgM and IgG may mean that no recent or past infection with the Zika virus has occurred, or that the antibodies have not yet reached a detectable level.