West Nile Virus Antibodies (IgG, IgM), CSF

Test Code

Quest Code

CPT Codes
86788, 86789

Preferred Specimen
2 mL CSF in a sterile plastic screw-cap container

Minimum Volume
0.7 mL

Transport Temperature

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

Enzyme Immunoassay (EIA)

Setup Schedule

Set up: Tue, Thur, Sat; Report available: 1-4 days

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

Interpretive Criteria
West Nile Virus Antibody (IgG), CSF
<1.30 Antibody not detected
1.30-1.49 Equivocal
>1.49 Antibody detected
West Nile Virus Antibody (IgM), CSF
<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.