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Lab Test

CMV (Cytomegalovirus) IgG Avidity

The CMV (Cytomegalovirus) IgG Avidity test is an essential laboratory assay used to assist in differentiating between a recent and a past infection with the cytomegalovirus (CMV). This test plays a critical role, especially in ambiguous cases, where both IgG and IgM antibodies to CMV are present in a patient's blood sample.

  • Profile Name: CMV (Cytomegalovirus) IgG Avidity
  • Sample Type: Blood
  • Preparations Required: There is no special preparation needed for this test.
  • Report Time: 6 hours
What is a CMV (Cytomegalovirus) IgG Avidity test?

A CMV IgG Avidity test measures the strength of the binding between IgG antibodies and the CMV virus. A high avidity indicates a past infection, while a low avidity suggests a recent infection, generally within the last three to six months.

Why might I need this test?

This test is particularly helpful in situations where it's necessary to distinguish between a recent and a past infection, such as in pregnancy. If a woman gets infected with CMV for the first time during pregnancy, there's a risk the virus can be passed to the unborn baby, possibly leading to serious complications.

Home Sample Collection Process

1
Book your convenient slot
Book your convenient slot
2
Sample Collection by Phlebotomist
Sample Collection by Phlebotomist
3
Reporting of the sample at lab
Reporting of the sample at lab
4
Download Reports
Download Reports
Frequently Asked Questions

This test requires a blood sample, usually drawn from a vein in your arm. The sample is then sent to a laboratory, where it's analyzed for the strength of the binding between the IgG antibodies and the CMV virus.

A low avidity indicates a recent CMV infection (within the last three to six months), while a high avidity suggests a past infection. However, a high avidity result in a person with symptoms of an active CMV infection may suggest a reactivation or reinfection.

Yes, factors such as the timing of the blood sample collection, the quality of the sample, or laboratory errors may affect the test results. Also, immunosuppressed patients might have a delayed IgG avidity maturation.

If you have a recent infection, it's important to discuss the implications with your doctor, especially if you are pregnant or immunocompromised. Your doctor may recommend further testing or specific treatment options.

This test is usually performed once when there's a need to differentiate between a recent and past CMV infection. Repeat testing is not typically needed unless there's a change in your clinical condition or if your doctor recommends it.

In healthy individuals, CMV infection often does not require specific treatment as the body can control the virus. However, in immunocompromised individuals or in severe cases, antiviral medication may be prescribed.

No, this test is not intended to monitor the effectiveness of treatment for CMV infection. Its primary purpose is to differentiate between a recent and past infection.

No, this test is specific for CMV infection. Other tests would be needed to diagnose infections with other viruses.

The risks associated with this test are minimal and similar to those of a regular blood draw, such as light bruising or bleeding at the puncture site.

There's currently no vaccine to prevent CMV infection. The best prevention strategies include practicing good hygiene, like regular hand washing, especially after contact with diapers or oral secretions, and avoiding close contact or sharing food or drink with people who have an active CMV infection.

The power of CMV (Cytomegalovirus) IgG Avidity testing, healthcare professionals can better identify the stage of CMV infection in patients, leading to improved patient care and outcomes.

CMV (Cytomegalovirus) IgG Avidity
₹ 600
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