Arbovirus Antibodies, IgG, Serum (INACTIVE as of 10/30/14: See Ordering Recommendations)
2001593
Ordering Recommendation
West Nile Virus serology is the only remaining arbovirus testing available in the U.S. Refer to West Nile testing for IgM, Serum (0050236). See Inactivation Notification.
Mnemonic
ARBO SER G
Methodology
Semi-Quantitative Indirect Fluorescent Antibody/Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Performed
Tue, Fri
Reported
1-5 days  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
  
Collect
Serum separator tube. Also acceptable: Plain red.  
Specimen Preparation
Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.15 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of acute specimens. Mark specimens plainly as "acute" or "convalescent."  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Contaminated, hemolyzed, or severely lipemic, specimens.  
Remarks
  
Stability
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)  
Reference Interval
Effective February 19, 2013
 
Test Number Components Reference Interval
0050507St. Louis Encephalitis Antibody, IgG by IFA, Serum (INACTIVE as of 10/30/14: See Ordering Recommendations) Less than 1:16
0050508California Encephalitis Antibody, IgG by IFA, Serum (INACTIVE as of 10/30/14: See Ordering Recommendations) Less than 1:16
0050509Eastern Equine Encephalitis Antibody, IgG by IFA, Serum (INACTIVE as of 10/30/14: See Ordering Recommendations) Less than 1:16
0050514Western Equine Encephalitis Antibody, IgG by IFA, Serum (INACTIVE as of 10/30/14: See Ordering Recommendations) Less than 1:16
0050234West Nile Virus Antibody, IgG by ELISA, Serum 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
 
Note
 
CPT Code(s)
86651; 86652; 86653; 86654; 86789
Components
Component Test Code*Component Chart Name
0050234West Nile Virus Ab, IgG, Ser
0050507St. Louis Encephalitis Ab, IgG, Serum
0050508Calif Encephalitis Antibody IgG
0050509Eastern Equine Enceph Ab, IgG
0050514Western Equine Enceph Ab, IgG, Serum
* 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.
Aliases
  • Encephalitis Antibodies