Western Equine Encephalitis, Antibody, IgM by IFA, CSF (INACTIVE as of 10/30/14: See Ordering Recommendations)
0098730
Ordering Recommendation
No alternative testing available in the U.S. See Inactivation Notification.
Mnemonic
WEST M CSF
Methodology
Semi-Quantitative Indirect Fluorescent Antibody
Performed
Tue, Fri
Reported
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
  
Collect
CSF.  
Specimen Preparation
Transfer 2 mL CSF to an ARUP Standard Transport Tube. (Min: 0.15 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Contaminated or heat-inactivated specimens.  
Remarks
  
Stability
Ambient: 8 hours; Refrigerated: 2 weeks; Frozen: 1 year  
Reference Interval
Less than 1:1  
Interpretive Data
This test is intended to be used as a semi-quantitative means of detecting western equine virus-specific IgM in CSF samples in which there is a clinical suspicion of western equine virus infection. A positive result for IgM may suggest current or recent infection. This test should not be used solely for quantitative purpose, nor should the results be used without correlation to clinical history or other data. Because other members of the Alphavirus family, such as eastern equine encephalitis virus, show extensive cross-reactivity with western equine encephalitis virus, serologic testing for these species should also be performed.

See Compliance Statement B: www.aruplab.com/CS
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.
 
Note
 
CPT Code(s)
86654
Components
Component Test Code*Component Chart Name
0098730Western Equine Enceph Ab, IgM, 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.
Aliases
  • Arbovirus IgM CSF
  • CSF Encephalitis Antibodies
  • Encephalitis Antibody, Western Equine IgM
  • WEE CSF IgM
  • Western Equine Encephalitis CSF IgM