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HelpTest Code VZV IgG Varicella Zoster Antibody
Aliases
Varicella Ab
Useful For
Intended for the qualitative detection of specific IgG antibodies to Varicella Zoster Virus in human serum as an aid to determine previous infection of VZV
Patient Preparation
No special patient preparation required
Collection Method
Venous collection
Minimum Volume
1 mL
Container
Gold Top Serum Separator
Preferred Specimen
Serum
Acceptable Specimens
Serum:
- Gold Top SST
- Red Top
Reference or Target Ranges
- <135 – Negative – Absence of detectable VZV IgG antibodies. Does not rule out acute infection during incubation and early stages.
- >165 – Positive – Presence of detectable VZV IgG antibodies. Does not indicate active infection or stage of disease.
- 135 – 165 Equivocal – Repeat the test. If repeated result is equivocal, a second collection should be tested.
Reportable Units
Index value and interpretation
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold |
Gross |
| Icterus Threshold |
Gross |
| Lipemia Threshold |
Gross |
| Other |
QNS, contaminated, improperly labled, improper specimen type. |
Specimen Stability
| Ambient |
N/A |
| Refrigerated (2°C to 8°C) |
7 Days |
| Frozen(<-20°C to 0°C) |
Indefinite |
Special Handling
Centrifuge specimen as early as possible after clotting; transfer serum to a plain polypropylene tube and refrigerate.
Performance Information
| Days and Time Performed |
Monday – Friday 8 AM – 4:30 PM |
| Expected Turn Around Time |
Within 3 days of arrival in lab |
| Stat Availabilty |
No |
| Performing Bench |
Special Chemistry |
| Methodology/Method Description |
DiaSorin Liasion XL – Chemiluminescence immunoassay (CLIA) |
Additional Information/Important Notes
The result alone is not diagnostic and should be considered with other clinical data and patient symptoms. Results from immunosuppressed patient should be interpreted with caution. Performance characteristics with individuals vaccinated with VZV (ROD strain) have not been established.
CPT Codes
86787