Arbovirus Antibodies, IgG, CSF
Ordering Recommendation
Semi-Quantitative Indirect Fluorescent Antibody/Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Tue, Fri
1-5 days  
New York DOH Approval Status
Specimens from New York clients will be sent out to a New York DOH approved laboratory, if possible.
Submit With Order
Specimen Required
Patient Preparation
Specimen Preparation
Transfer 4 mL CSF to an ARUP Standard Transport Tube. (Min: 1.5 mL)  
Storage/Transport Temperature
Unacceptable Conditions
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
Test Number Components Reference Interval
0098895St. Louis Encephalitis Antibody, IgG by IFA, CSF Less than 1:1
0098893California Encephalitis Antibody, IgG by IFA, CSF Less than 1:1
0098896Eastern Equine Encephalitis Antibody, IgG by IFA, CSF Less than 1:1
0098897Western Equine Encephalitis Antibody, IgG by IFA, CSF Less than 1:1
0050238West 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

See Compliance Statement B:
Statement B: This test was developed and its performance characteristics determined by ARUP Laboratories. The U.S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.
CPT Code(s)
86651; 86652; 86653; 86654; 86789
Component Test Code*Component Chart Name
0050238West Nile Virus Antibody IgG CSF
0098893California Encephalitis IgG CSF
0098895St. Louis Encephalitis Ab, IgG, CSF
0098896Eastern Equine Enceph Ab, IgG, CSF
0098897Western Equine Enceph Ab, IgG, CSF
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.