West Nile Virus Antibodies (IgG, IgM), Serum

Test Code
WNV


Quest Code
36596


CPT Codes
86788, 86789

Preferred Specimen
1 mL serum from SST


Minimum Volume
0.7 mL


Transport Container
Transport tube


Transport Temperature
Room temperature


Specimen Stability
Room temperature: 4 days
Refrigerated: 7 days
Frozen: 30 days


Methodology
Enzyme Immunoassay (EIA)

Setup Schedule
Mon, wed, fri


Report Available
3 days


Limitations
Cross reactivity has been observed between alphavirus group and flavivirus group, e.g., yellow fever or yellow fever vaccination.


Reference Range
West Nile Virus Ab (IgG) <1.30
West Nile Virus Ab (IgM) <0.90

Interpretive Criteria
WNV Ab (IgG)
<1.30 Antibody not detected
1.30-1.49 Equivocal
>1.49 Antibody detected
WNV Ab (IgM)
<0.90 Antibody not detected
0.90-1.10 Equivocal
>1.10 Antibody detected


Performing Laboratory
Quest Diagnostics Nichols Institute-Chantilly VA
14225 Newbrook Drive
Chantilly, VA 20151-2228




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.