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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Cytomegalovirus Antibody (IgG)
Test Code403
CPT Codes
86644
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.
Reference Range
U/mL | Interpretation |
<0.60 | Negative |
0.60-0.69 | Equivocal |
≥0.70 | Positive |
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.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153