Cytomegalovirus Antibodies, IgG and IgM
Ordering Recommendation
Aids in discriminating between current and past cytomegalovirus infection in immunocompetent individuals.
Semi-Quantitative Chemiluminescent Immunoassay
1-2 days  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
Serum separator tube. Also acceptable: Serum from umbilical cord blood  
Specimen Preparation
Allow specimen to clot completely at room temperature. Separate serum from cells ASAP or within 2 hours of collection. Transfer 2 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as "acute" or "convalescent."  
Storage/Transport Temperature
Unacceptable Conditions
Plasma or urine. Contaminated, hemolyzed, or heat-inactivated specimens.  
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)  
Reference Interval
Test Number Components Reference Interval
0050165Cytomegalovirus Antibody, IgG  
0.59 U/mL or less: Not Detected.
0.60-​0.69 U/mL: Indeterminate -​ Repeat testing in 10-​14 days may be helpful.
0.70 U/mL or greater: Detected.
0050553Cytomegalovirus Antibody, IgM  
29.9 AU/mL or less: Not Detected.
30.0-​34.9 AU/mL: Indeterminate -​ Repeat testing in 10-​14 days may be helpful.
35.0 AU/mL or greater: Detected -​ IgM antibody to CMV detected, which may indicate a current or recent infection.  However, low levels of IgM antibodies may occasionally persist for more than 12 months post-​infection.
Interpretive Data
Refer to report.  
This test should not be used for blood donor screening, associated re-entry protocols, or for screening Human Cell, Tissues and Cellular and Tissue-Based Products (HCT/P).
CPT Code(s)
86644; 86645
Component Test Code*Component Chart NameLOINC
0050165CMV Antibody IgG5124-3
0050553CMV Antibody IgM5126-8
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
  • CMV Antibodies
  • CMV IgG & IgM
  • Cytomegalovirus (CMV) Antibodies, IgG and IgM, Serum