Arbovirus Antibodies, IgG and IgM, Serum (INACTIVE as of 10/30/14: See Ordering Recommendations)
2001594
Ordering Recommendation
West Nile Virus serology is the only remaining component of this panel available in the U.S. Refer to West Nile testing for IgG & IgM, Serum (0050226). See Inactivation Notification.
Mnemonic
ARBOSER GM
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: 0.2 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. 
0098732St. Louis Encephalitis Antibody, IgM by IFA, Serum (INACTIVE as of 10/30/14: See Ordering Recommendations) Less than 1:16
0098731California Encephalitis Antibody, IgM by IFA, Serum (INACTIVE as of 10/30/14: See Ordering Recommendations) Less than 1:16
0098733Eastern Equine Encephalitis Antibody, IgM by IFA, Serum (INACTIVE as of 10/30/14: See Ordering Recommendations) Less than 1:16
0098734Western Equine Encephalitis Antibody, IgM by IFA, Serum (INACTIVE as of 10/30/14: See Ordering Recommendations) Less than 1:16
0050236West Nile Virus Antibody, IgM by ELISA, Serum 0.89 IV or less: Negative -​ No significant level of West Nile virus IgM antibody detected.
0.90-​1.10 IV: Equivocal -​ Questionable presence of West Nile virus IgM antibody detected.  Repeat testing in 10-​14 days may be helpful.
1.11 IV or greater: Positive -​ Presence of IgM antibody to West Nile virus detected, suggestive of current or recent infection. 
Interpretive Data
Refer to individual components.  
Note
 
CPT Code(s)
86651 x2; 86652 x2; 86653 x2; 86654 x2; 86789; 86788
Components
Component Test Code*Component Chart NameLOINC
0050234West Nile Virus Ab, IgG, Ser38997-3
0050236West Nile Virus Ab, IgM, Ser38166-5
0050507St. Louis Encephalitis Ab, IgG, Serum10906-6
0050508Calif Encephalitis Antibody IgG10904-1
0050509Eastern Equine Enceph Ab, IgG10896-9
0050514Western Equine Enceph Ab, IgG, Serum6957-5
0098731California Encephalitis IgM10905-8
0098732St. Louis Encephalitis Ab, IgM, Serum10907-4
0098733Eastern Equine Enceph Ab, IgM10898-5
0098734Western Equine Enceph Ab, IgM, Ser6958-3
* 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
  • Arbovirus serology
  • California Encephalitis Antibody, IgG
  • California Encephalitis Antibody, IgM
  • Eastern Equine Encephalitis Antibody, IgG
  • Eastern Equine Encephalitis Antibody, IgM
  • Encephalitis Antibodies
  • St. Louis Encephalitis Antibody, IgG
  • St. Louis Encephalitis Antibody, IgM
  • West Nile Virus Antibody, IgG
  • West Nile Virus Antibody, IgM
  • Western Equine Encephalitis Antibody IgG
  • Western Equine Encephalitis, Antibody, IgM