West Nile Virus Antibodies (IgG, IgM), Serum

Test Code
36596


Alias/See Also
LAB867
WNV G/M


CPT Codes
86788, 86789

Preferred Specimen
1 mL serum


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
Tues, thurs, sat


Report Available
1-4 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-San Juan Capistrano, CA
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042




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.