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Test Name

West Nile Virus Antibodies (IgG, IgM), Serum

CPT Code(s)

86788, 86789

Methodology

Enzyme Immunoassay (EIA)

Limitations

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

Reference Range(s)

WNV (IgG) <1.30
WNV (IgM) <0.90

Interpretive Criteria
WNV Ab (IgG)
<1.30 Antibody not detected
1.30-1.49 Equivocal
≥1.50 Antibody detected
WNV Ab (IgM)
<0.90 Antibody not detected
0.90-1.10 Equivocal
>1.10 Antibody detected

To view specimen requirements and codes please Select a regional laboratory.

Not sure which laboratory serves your office? Call us 866-MYQUEST (866-697-8378)

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided 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 payer being billed.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.

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West Nile Virus Antibodies (IgG, IgM), Serum
36596