Ordering Recommendation
Not recommended as a stand-alone test. Refer to Arbovirus Antibodies, IgG and IgM, CSF (2001597).
Mnemonic
Methodology
Semi-Quantitative Indirect Fluorescent Antibody/Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Performed
Tue, Fri
Reported
1-5 days
New York DOH Approval Status
Specimen Required
CSF.
Transfer 4 mL CSF to an ARUP Standard Transport Tube. (Min: 1.5 mL)
Refrigerated.
Plasma. Contaminated, heat-inactivated, hemolyzed, or severely lipemic specimens.
Ambient: 8 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Reference Interval
Effective February 19, 2013
Components | Reference Interval |
St. Louis Encephalitis Antibody, IgG by IFA, CSF | Less than 1:1 |
California Encephalitis Antibody, IgG by IFA, CSF | Less than 1:1 |
Eastern Equine Encephalitis Antibody, IgG by IFA, CSF | Less than 1:1 |
Western Equine Encephalitis Antibody, IgG by IFA, CSF | Less than 1:1 |
West Nile Virus Antibody, IgG by ELISA, CSF | 1.29 IV or less: Negative - No significant level of West Nile virus IgG antibody detected. 1.30-1.49 IV: Equivocal - Questionable presence of West Nile virus IgG antibody detected. Repeat testing in 10-14 days may be helpful. 1.50 IV or greater: Positive - Presence of IgG antibody to West Nile virus detected, suggestive of current or past infection. |
Interpretive Data
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
Note
Hotline History
CPT Codes
86651; 86652; 86653; 86654; 86789
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0050238 | West Nile Virus Antibody IgG CSF | 39572-3 |
0098893 | California Encephalitis IgG CSF | 49138-1 |
0098895 | St. Louis Encephalitis Ab, IgG, CSF | 21509-5 |
0098896 | Eastern Equine Enceph Ab, IgG, CSF | 10897-7 |
0098897 | Western Equine Enceph Ab, IgG, CSF | 9315-3 |