Test: West Nile Antibody IgG & IgM, CSF 
  Synonym: West Nile Virus Antibody 
  Method: Enzyme-Linked Immunosorbent Assay 
  Availability: Varies by season. In-season testing is performed on Tuesday with results for specimens received by 0800 reported the next day by 1700. For off-season testing results will be available within 14 days of receipt of specimen in lab. 
  Specimen: CSF 
  Collection Device: Sterile, capped tube 
  Volume: 1.0 mL 
  Storage/Transport: Refrigerate; if transport to the lab is not the same day as collection, freeze 
  Specimen Stability: Ambient, not stable; refrigerated, < 24 hours; frozen, 1 month 
  Reference Interval: IgG: Negative
IgM: Negative 
  Reportable Disease:  
  Comments: The Nebraska State Epidemiologist does not recommend screening for only West Nile IgG antibody. All requests for only IgG wil be sent to a reference laboratory and will be charged to the submitter. 
  Revised: 2/3/2012