Additional Info: Test includes:
CMV antibody IgG
CMV antibody IgM
Useful For:
CMV infections are common and usually asymptomatic. In patients who are immunocompromised, CMV may cause disseminated, severe disease. CMV may cause birth defects in a minority of infected newborns. CMV IgG antibodies may represent prior exposure or recent infection if CMV IgM antibodies are also present. An elevated level of CMV IgM antibody represents recent CMV infection. Because an IgM test can yield false positive results and low levels of IgM antibody may persist for more than 12 months post infection, reliance on a single test result could be misleading. If an acute infection is suspected, consider obtaining a new specimen and submit for both IgG and IgM testing in two or more weeks.
Methodology: Enzyme Immunoassay (EIA)
Specimen Requirements: 1 yellow-top SST tube (minimum: 0.1 mL of serum). Centrifuge SST 30 minutes after draw. Refrigerate specimen after collection.
NOTE:
Gross hemolysis, hyperlipidemia, and microbial contamination are unacceptable.
Analytical Time: 3 days
Days Set Up: Monday, Wednesday, Friday
CPT Information:
86644 – cytomegalovirus IgG
86645 – cytomegalovirus IgM