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Cmv/Cytomegalo Virus Igg Avidity

₹1,000.00

15 minutes
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TThe CMV IgG Avidity Test measures the strength (avidity) with which IgG antibodies bind to the cytomegalovirus (CMV). When the body is first infected with CMV, it produces low-avidity IgG antibodies, which gradually mature into high-avidity antibodies over time.
This test helps differentiate between a recent primary CMV infection (usually low-avidity) and a past infection (high-avidity), which is especially important in pregnancy or in immunocompromised patients.

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    Description

    Why It’s Done:

    The CMV IgG Avidity Test is commonly used to:
    • Determine whether a CMV infection is recent or past, especially when CMV IgM antibodies are also present.
    • Assess risk to the fetus during pregnancy—recent CMV infections in early pregnancy can lead to congenital CMV, a serious condition for the unborn baby.
    • Help guide management in organ transplant recipients, immunocompromised individuals, or patients with HIV/AIDS.
    • Clarify ambiguous results from routine CMV IgG and IgM tests.

    Preparation:

    • No special preparation is required for this test.
    • A standard blood sample is drawn, usually from a vein in your arm.
    • Inform your healthcare provider about any medications or immune-modulating treatments you are taking, though they typically do not affect the test outcome.

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