Arbovirus Antibodies, IgM, Serum (INACTIVE as of 10/30/14: See Ordering Recommendations)
2001592
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 IgM, Serum (0050236). See Inactivation Notification.
Mnemonic
ARBO SER M
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
Plasma. Contaminated, heat-inactivated, 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
 
 
Test Number Components Reference Interval
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
 
Note
 
CPT Code(s)
86651; 86652; 86653; 86654; 86788
Components
Component Test Code*Component Chart NameLOINC
0050236West Nile Virus Ab, IgM, Ser29536-0
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