Casandra
Casandra Test Code QD29247Version 1 (DRAFT)
Performing Lab
Varicella‑Zoster Virus AB (Immunity Screen), ACIF (Serum)
Clinical Use
Order TestUse
A positive titer (≥1:4) by anticomplement immunofluorescence (ACIF) indicates a history of past infection by Varicella‑Zoster virus or vaccination. This antibody is usually detectable within 2 days after rash onset and persists for life. Conversely, absence of detectable antibody suggests susceptibility to varicella (chickenpox).
Special Instructions
Not provided.
Limitations
This test was developed and its analytical performance characteristics determined by Quest Diagnostics; it has not been cleared or approved by FDA. It has been validated under CLIA and used for clinical purposes.
Test Details
Methodology
Immunoassay (Other)
Biomarkers
Varicella‑Zoster Virus Antibody
OtherAntibody Titer • Other • Categorical (e.g., Positive / Negative / Indeterminate)
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
1 mL
Minimum Volume
Not provided
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 14 days |
| Frozen | 30 days |