Cytomegalovirus (CMV) Avidity IgG Test
Short Name: CMV Avidity IgG Test
Also known as: CMV IgG Avidity Test, Cytomegalovirus IgG Avidity Test
Cytomegalovirus (CMV) Avidity IgG Test test available at DNA Labs India for ₹679. Uses Enzyme Immunoassay on Serum samples. Results in Results are typically available the same day if the sample is received by 9 am on Mon/Wed/Fri.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr SHAILAJA RAGHUNATH MURDESHWAR
Consultant Physician · Reg: 8052
Last reviewed: September 7, 2026
Overview
To determine the timing of Cytomegalovirus (CMV) infection by assessing the avidity of IgG antibodies. This helps in evaluating the risk of recent infection, which is important for pregnant women and immunocompromised patients to prevent complications such as congenital defects or severe illness.
- Test Code
- 469
- Price
- ₹679
- Sample Type
- Serum
- Result Time
- Results are typically available the same day if the sample is received by 9 am on Mon/Wed/Fri.
- Fasting Required
- No
- Method
- Enzyme Immunoassay
Sample Collection
No special preparation required. Inform your doctor about any medications or supplements you are taking.
Method: Venipuncture
Laboratory Analysis
A blood sample will be drawn from a vein in your arm by a trained phlebotomist. The procedure is quick and minimally invasive.
Report Delivery
Apply pressure to the puncture site to stop bleeding. A bandage will be applied. You can resume normal activities immediately.
Timeline: Results are typically available the same day if the sample is received by 9 am on Mon/Wed/Fri.
Patient Instructions
About This Test
Who Should Get This Test
To determine the timing of Cytomegalovirus (CMV) infection by assessing the avidity of IgG antibodies. This helps in evaluating the risk of recent infection, which is important for pregnant women and immunocompromised patients to prevent complications such as congenital defects or severe illness.
How to Prepare
- Collect 2 mL blood in a Serum Separator Tube (SST)
- Ship the sample refrigerated or frozen
- Avoid hemolyzed or lipemic samples
- Label the sample correctly with patient details
Doctor's Notes
Reviewed by Dr SHAILAJA RAGHUNATH MURDESHWAR — MBBS, MD (General Medicine) · Reg. No. 8052
"The CMV Avidity IgG test is vital for differentiating recent from past CMV infection, which is crucial for managing pregnancy and immunocompromised patients to prevent complications."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Hemolyzed or lipemic samples
- Incorrect sample type or insufficient volume
- Improperly labeled or transported samples
Understanding Your Results
Low Avidity
Suggests recent CMV infection within the past 3-4 months. Higher risk of transmission, especially in pregnancy, and may require clinical follow-up.
Moderate Avidity
Indeterminate result; may require repeat testing after 2-4 weeks or additional diagnostics like CMV PCR.
High Avidity
Indicates past CMV infection, likely more than 4 months ago. Lower risk of recent transmission, and often no further action needed.
If you are pregnant, immunocompromised, or experiencing symptoms of CMV infection (e.g., persistent fever, fatigue, or vision changes), consult a healthcare provider immediately for testing and personalized advice.
Limitations
- ⚠Cannot distinguish between active and latent infection
- ⚠May require confirmatory testing (e.g., PCR) in indeterminate cases
- ⚠Avidity thresholds may vary between laboratory methods
Risks & Considerations
- ●Minimal risk of bruising, bleeding, or infection at the puncture site
- ●Slight pain or discomfort during blood draw
- ●Rarely, dizziness or fainting during the procedure
Interfering Factors
- ●Cross-reactivity with other herpesviruses (e.g., EBV, HSV)
- ●Immunosuppressive therapy may affect antibody levels
- ●Recent blood transfusion or immunoglobulin therapy
Compare With Similar Tests
| Test | Cytomegalovirus (CMV) Avidity IgG Test | ||||
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| Comparison | Cytomegalovirus (CMV) Avidity IgG Test |
Frequently Asked Questions
What is the Cytomegalovirus (CMV) Avidity IgG Test?
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How much does the CMV Avidity IgG Test cost in India?
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