Specimen Collection Manual and Test Catalog
CMV IGG ANTIBODY
Geisinger Epic Procedure Code: LAB2170 Geisinger Epic ID: 14882Serum
0.5 mL serum; minimum 0.2 mL
Allow to clot. Centrifuge and submit 0.5 mL serum.
Refrigerated (preferred). Room temperature (stable 8 hours) or frozen specimen also acceptable.
Room temperature: 8 hours. 2-8°C: 4 days. Frozen: 6 months.
Specimen stability exceeded; specimen grossly hemolyzed.
| Result | Interpretation |
| Negative | Absence of detectable CMV IgG antibodies. A negative result generally indicates that immunity has not been acquired. If exposure to CMV is suspected despite a negative finding, a second sample should be collected and tested no less than one or two weeks later. |
| Equivocal | Suggest a second sample be collected and tested one to two weeks later. |
| Positive | Presence of detectable CMV IgG antibodies. A positive result generally indicates either recent or past exposure to CMV. |
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Qualitative determination of IgG antibodies to cytomegalovirus.
CMV IgG, Cytomegalovirus IgG, CMVG, TORCH, Cytomegalovirus antibody IgG
Cytomegalovirus (CMV) exposure occurs throughout life, and by adulthood 50-90% of the population is seropositive for CMV antibodies. A single positive CMV IgG result is useful in distinguishing subjects who have been exposed to the virus from those who have not and by itself is indicative of a prior infection. Testing for CMV IgM antibodies is recommended to support a diagnosis of a current infection.
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM