Casandra
Casandra Test Code QD91862Version 1 (DRAFT)
Performing Lab
West Nile Virus Antibody (IgM), Serum
Also known as: WNV IgM Serum
Clinical Use
Order TestUse
Detection of West Nile virus–specific IgM antibodies in serum is indicative of recent or acute infection. Positive results support early diagnosis of West Nile virus disease, although cross‑reactivity with other flaviviruses or alphaviruses may occur, warranting additional confirmatory testing when clinically indicated.
Special Instructions
Not provided.
Limitations
Cross‑reactivity has been observed between flavivirus and alphavirus groups, including yellow fever or following yellow fever vaccination, which can produce false‑positive results; results should be interpreted in clinical context.
Test Details
Methodology
Immunoassay (EIA)
Biomarkers
Qualitative enzyme immunoassay for detection of West Nile virus IgM antibodies in serum.
West Nile Virus IgM antibody
AnalyteIgM antibody • Other • Binary (Detected / Not Detected)
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
1 mL serum
Minimum Volume
0.7 mL
Container
Plastic screw‑cap vial
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 4 days |
| Refrigerated | 7 days |
| Frozen | 30 days |