Test Details
Methodology
Chemiluminescent immunoassay (CLIA)
Result Turnaround Time
1 - 2 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Use
Aid in the diagnosis of acute primary infection
Special Instructions
Acute and convalescent specimens must be submitted on separate request forms.
Limitations
IgM responses may persist for weeks to months postinfection. Low levels of IgM may be detectable during reactivation of infection. This test is intended for qualitative determination only. The numeric value of the final result above the cutoff is not indicative of the amount of CMV IgM antibody present.
Specimen Requirements
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.2 mL
Container
Red-top tube or gel-barrier tube
Stability Requirements
Temperature | Period |
|---|---|
Room temperature | 14 days |
Refrigerated | 14 days |
Frozen | 14 days |
Freeze/thaw cycles | Stable x4 |
Reference Range
Negative: <30.0 AU/mL
The equivocal sample should be retested. In case the result remains in this range after repeat testing, a second sample should be collected.
Storage Instructions
Room temperature
Causes for Rejection
Hemolysis; lipemia; gross bacterial contamination; grossly icteric; visible particulate matter
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 096727 | Cytomegalovirus (CMV) Ab, IgM | 5126-8 | 096730 | Cytomegalovirus (CMV) Ab, IgM | AU/mL | 5126-8 |
| Order Code | 096727 | |||||
| Order Code Name | Cytomegalovirus (CMV) Ab, IgM | |||||
| Order Loinc | 5126-8 | |||||
| Result Code | 096730 | |||||
| Result Code Name | Cytomegalovirus (CMV) Ab, IgM | |||||
| UofM | AU/mL | |||||
| Result LOINC | 5126-8 |