Last Modified:
6/17/2019 10:30:02 AM
Medical Necessity Documentation:
Client Notes:
Patient Preparation:
Specimen Requirements:
2.0 CSF in a Sterile Plastic Vial
Collection Instructions:
If multiple Fluid or CSF test are being requested please specify order of importance
Minimum Volume:
0.7 mL CSF
Transport & Storage: Temperature/Stability:
4 days Ambient
7 days Refrigerated (transport)
30 days Frozen
Reference Range:
| West Nile Virus Antibody (IgG), CSF |
<1.30 |
| West Nile Virus Antibody (IgM), CSF |
<0.90 |
Critical Ranges:
Test Comments:
Methodology:
Enzyme Immunoassay (EIA)
Clinical Significance:
The West Nile Virus (WNV) is a single-stranded RNA virus of the Flaviviridae family. Like other arboviruses (e.g., St. Louis Encephalitis, Dengue Fever, and Yellow Fever), its main route of transmission to humans is through mosquitoes (primarily culex species) that have acquired the virus from infected birds. A single elevated WNV result, including IgM that may persist for many months, could represent past infection with WNV or infection with another flavivirus including Dengue and St. Louis Encephalitis. Diagnosis of suspected WNV infection is confirmed by isolation of WNV or detection of WNV antigen or nucleic acid sequences in clinical samples or detection of WNV-specific IgM in blood or spinal fluid, confirmed with detection of WNV-specific neutralizing antibody in the same or a subsequent sample.
Documentation:
Custom Panel:
No
PRODUCTION SCHEDULE
Turn Around Time:
1 day
Days Performed:
Monday, Wednesday, Friday
Sites Performed:
Quest - Chantilly
PHL Test Code:
WNCSF
EPIC Test Code:
LAB3010
Send Out Test Code:
36597
Alternate Test Names:
West Nile Virus Antibodies (IgG, IgM), CSF ; West Nile Virus IgG IgM CSF
Included Tests:
West Nile Virus Ab IgG; West Nile Virus Ab IgM
CPT Coding:
86789, 86788
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