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HelpTest Code LAB7045 Cytomegalovirus (CMV) Antibody, IgG and IgM, Serum
Infectious
Performing Laboratory
Barnes-Jewish Hospital Laboratory
Methodology
Multiple Flow Immunoassay
Literature Reference:
Package Insert: ToRC IgG package insert, Bio-Rad Laboratories, Inc. 8/2024
Package Insert: ToRC IgM package insert, Bio-Rad Laboratories, Inc. 8/2024
Specimen Requirements
Specimen Type: Serum
Container/Tube: Plain red top, Red/Grey SST or Gold SST
Specimen Volume: Full tube
Day(s) Test Set Up
Monday through Sunday 0700-1300
Turnaround Time:
STAT: not available
Routine: results available the day of testing
Test Classification and CPT Coding
86644-CMV IgG
86645-CMV IgM
Reference Values
Referenve Values
CMV IgG - Negative
CMV IgM - Negative
Literature Reference:
Henry JB. Clinical diagnosis and management by laboratory methods. 20th ed. Saunders, 2001:765,1046-50,1057-58.
Interpretive Data
CMV IgG
|
Results |
Interpretation |
| Negative | Negative results suggest no prior exposure or infection. |
|
Equivocal |
Equivocal results may occur during acute infection or may be due to nonspecific binding reactions. Submit an additional sample for testing if clinically indicated. |
|
Positive |
Positive results indicate past or recent infection. |
CMV IgM
|
Results |
Interpretation |
| Negative | Negative results suggests no acute or active infection. However, a negative result does not rule out primary infection. |
|
Equivocal |
Equivocal results may occur during acute infection or may be due to nonspecific binding reactions. Submit an additional sample for testing if clinically indicated. |
|
Positive |
Positive results suggest a recent infection (primary, reactivation or reinfection). |
1. Positive results in neonates must be interpreted with caution.
2. Specimens drawn very early in the course of an infection may not have detectable level of IgG.
3. Patients with immunosuppression or recent blood transfusion must be interpreted with caution.
4. Performance characteristics have not been established for cord blood and neonates.
5. The results obtained from this assay are intended to be an aid to diagnosis only. Each physician must interpret the result in light of the patient’s history, physical findings and other diagnostic procedures.
Specimen Transport Temperature
Ambient
Additional Information
For BJH Laboratory Use Only
Alternate Specimen Type: Plasma, mint green (heparin)
Analyte Stability: Avoid hemolysis. Refer to analyte stability chart.
Laboratory Processing Instructions: Test performed in the Core Lab. Processed by automated line for delivery to OBS3 with a minimum of 1mL of plasma/serum. Completed specimens are stored refrigerated for 7 days.