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403 CYTOMEGALOVIRUS, CMV IGG
Test CodeCMVIGG
Preferred Specimen
1 mL serum collected in a serum separator tube (SST®)
Minimum Volume
0.5 mL
Transport Container
Plastic screw-cap vial
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 4 days
Refrigerated: 7 days
Frozen: 30 days
Refrigerated: 7 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic • Grossly icteric
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Mon, Wed, Fri a.m.; Report available: Next day
Limitations
False-positive IgM test results may be due to the presence of heterophil antibodies or presence of rheumatoid factor.
Clinical Significance
CMV infections are common and usually asymptomatic. In patients who are immunocompromised, CMV may cause severe disseminated disease. CMV may cause birth defects in a minority of infected newborns. CMV IgG antibodies may represent prior exposure or recent infection.