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HelpTest Code CMVG Cytomegalovirus (CMV) Antibodies, IgG, Serum
Additional Codes
CNE Order Code: CMV IgG
Reporting Name
Cytomegalovirus Ab, IgG, SUseful For
Determining whether a patient (especially transplant recipients and organ and blood donors) has had a recent infection or previous exposure to cytomegalovirus
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumSpecimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Minimum Volume
0.4 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 14 days | |
| Frozen | 14 days |
Reference Values
Negative (reported as positive, negative, or equivocal)
Day(s) Performed
Monday through Saturday
CPT Code Information
86644
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CMVG | Cytomegalovirus Ab, IgG, S | 13949-3 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| CMVG | Cytomegalovirus Ab, IgG, S | 13949-3 |
Interpretation
Positive cytomegalovirus (CMV) IgG results indicate past or recent CMV infection. These individuals may transmit CMV to susceptible individuals through blood and tissue products.
Equivocal CMV IgG results may occur during acute infection or may be due to nonspecific binding reactions. Submit an additional sample for testing if clinically indicated.
Individuals with negative CMV IgG results are presumed to not have had prior exposure or infection with CMV and are, therefore, considered susceptible to primary infection.
Report Available
Same day/1 to 3 daysReject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | Reject |
| Heat-inactivated specimen | Reject |
Method Name
Multiplex Flow Immunoassay (MFI)
Forms
If not ordering electronically, complete, print, and send Infectious Disease Serology Test Request (T916) with the specimen.