Test Details
Methodology
Enzyme immunoassay (EIA)
Result Turnaround Time
1 - 4 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
This test may aid in the diagnosis of acute and recent infection with varicella-zoster virus (VZV). The presence of IgM-class antibodies to VZV is suggestive of acute or recent infection; however, results should be correlated with clinical presentation. VZV IgM may also be detectable in individuals recently immunized against VZV or individual's with reactivation of latent virus.
Specimen Requirements
Specimen
Serum
Volume
1 mL
Minimum Volume
0.25 mL (Note: This volume does not allow for repeat testing.)
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 x3 |
Reference Range
• Negative: <0.91 index
• Borderline: 0.91−1.09 index
• Positive: >1.09 index
Storage Instructions
Maintain specimen at room temperature.
Causes for Rejection
Hemolysis; lipemia; gross bacterial contamination; plasma samples
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 096776 | Varicella-Zoster Ab, IgM | 29662-4 | 096778 | Varicella-Zoster Ab, IgM | index | 29662-4 |
| Order Code | 096776 | |||||
| Order Code Name | Varicella-Zoster Ab, IgM | |||||
| Order Loinc | 29662-4 | |||||
| Result Code | 096778 | |||||
| Result Code Name | Varicella-Zoster Ab, IgM | |||||
| UofM | index | |||||
| Result LOINC | 29662-4 |