Use

This test is primarily used to detect West Nile virus-specific IgG and IgM antibodies in cerebrospinal fluid (CSF) to help diagnose central nervous system infections suspected to be caused by the West Nile virus. Due to cross-reactivity with other Flaviviridae family members such as the St. Louis encephalitis virus, specific serologic testing for these species may be considered in the differential diagnosis. It is important to correlate the test results with clinical history and other data.