West Nile Virus Antibody (IgM), Serum
Also known as: WNV IgM Serum
Use
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.
Methodology
Immunoassay (EIA)
Biomarkers
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
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 |
Other tests from different labs that may be relevant