Cytomegalovirus Antibodies (IgG, IgM)
Also known as: CMV IgG, IgM Abs, CMV Antibody IgG, IgM
Use
Intrauterine or congenital CMV infections occur in 0.5 to 2.2% of all live births. Symptomatic congenital infections usually occur in infants born to non‑immune mothers who have primary infections during pregnancy. Latency and reactivation of CMV influence the interpretation of serological results. A single positive CMV IgG result is an indication of present or past infection. The presence of CMV IgM suggests a recent CMV exposure but does not differentiate between primary infection and reactivation. False‑positive IgM results may be due to heterophil antibodies or rheumatoid factor. (Quest Diagnostics Nichols Institute, San Juan Capistrano) ([jdos.nicholsinstitute.com](https://jdos.nicholsinstitute.com/dos/questdemo/test/872337?utm_source=openai))
Special Instructions
Not provided.
Limitations
False‑positive IgM test results may be due to the presence of heterophil antibodies or presence of rheumatoid factor. ([jdos.nicholsinstitute.com](https://jdos.nicholsinstitute.com/dos/questdemo/test/872337?utm_source=openai))
Methodology
Immunoassay
Biomarkers
CMV IgG
AnalyteCMV IgM
Analyte
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1.5 mL serum
Minimum Volume
0.7 mL serum
Container
Red Top (No Additive)
Causes for Rejection
Gross hemolysis; Grossly lipemic; Grossly icteric
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 4 Days |
| Refrigerated | 7 Days |
| Frozen | 30 Days |
Other tests from different labs that may be relevant