Test Number: 3609925
Revision Date 09/05/2019
|Test Name||Methodology||LOINC Code|
West Nile Virus IgM Antibody CSF
||Semi-Quantitative Enzyme-Linked Immunosorbent Assay||39573-1|
West Nile Virus IgG Antibody CSF
||Semi-Quantitative Enzyme-Linked Immunosorbent Assay||39572-3|
|Specimen||Specimen Volume (min)||Specimen Type||Specimen Container||Transport Environment|
|Preferred||2 mL (0.3 mL)||CSF (Cerebrospinal Fluid)||Sterile Screwtop Container||Refrigerated|
|Instructions||Stability (collection to initiation of testing): Ambient: 8 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)|
|Testing Schedule||Tue, Fri|
|Expected TAT||2-8 Days|
|Clinical Use|| This test is intended to be used as a semi-quantitative means of detecting West Nile virus-specific IgG and IgM in CSF specimens in which there is a clinical suspicion of West Nile virus infection. This test should not be used solely for quantitative purposes, nor should the results be used without correlation to clinical history or other data. Because other members of the Flaviviridae family, such as St. Louis encephalitis virus, show extensive cross-reactivity with West Nile virus, serologic testing specific for these species should be considered.
The detection of antibodies to West Nile virus in cerebrospinal fluid may indicate central nervous system infection. However, consideration must be given to possible contamination by blood or transfer of serum antibodies across the blood-brain barrier.
|Notes|| Reference Lab: ARUP
Test Code: 50228
Click Here to view information on the ARUP website.
|CPT Code(s)||86789; 86788|
|Lab Section||Reference Lab|