2001595
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Arbovirus Antibodies, IgM, CSF

ARBO CSF M
Example Reports
Negative
Positive

Ordering Recommendation

Not recommended as a stand-alone test. Refer to Arbovirus Antibodies, IgG and IgM, CSF (2001597).

New York DOH Approval Status

Testing is not New York state approved. Specimens from New York clients will be sent out to a New York state-approved laboratory.

Specimen Required

Patient Preparation
Collect

CSF.

Specimen Preparation

Transfer 4 mL CSF to an ARUP Standard Transport Tube. (Min: 1.5 mL)
New York State Clients: 1 mL CSF (Min: 0.1 mL) AND 2 mL CSF (Min: 0.7 mL)

Storage/Transport Temperature

Refrigerated.
New York State Clients: test code 60145, Ambient; test code 36597, Refrigerated

Unacceptable Conditions

Contaminated, heat-inactivated , or hemolyzed specimens.

Remarks

New York State Clients: NYSDOH will only approve West Nile Virus Antibody testing when performed as an IgG, IgM panel.

Stability

Ambient: 8 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
New York State Clients: Ambient: 4 days; Refrigerated: 1 week; Frozen: 1 month

Methodology

Semi-Quantitative Indirect Fluorescent Antibody/Semi-Quantitative Enzyme-Linked Immunosorbent Assay

Performed

Tue, Fri

Reported

1-5 days

Reference Interval

Test Number
 Components
 Reference Interval
  West Nile Virus Antibody IgM CSF 0.89 IV or less
  Eastern Equine Enceph Ab, IgM, CSF Less than 1:1
  Western Equine Enceph Ab, IgM, CSF Less than 1:1
  California Encephalitis IgM CSF Less than 1:1
  St. Louis Encephalitis Ab, IgM, CSF Less than 1:1

Interpretive Data

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.


Component Interpretation
West Nile Virus Antibody, IgM by ELISA, CSF 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.

Compliance Category

Laboratory Developed Test (LDT)

Note

Hotline History

N/A

CPT Codes

86651; 86652; 86653; 86654; 86788

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Components

Component Test Code* Component Chart Name LOINC
0050239 West Nile Virus Antibody IgM CSF 39573-1
0098729 Eastern Equine Enceph Ab, IgM, CSF 10899-3
0098730 Western Equine Enceph Ab, IgM, CSF 9316-1
0098898 California Encephalitis IgM CSF 49139-9
0098899 St. Louis Encephalitis Ab, IgM, CSF 21510-3
* 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 Antibodies, IgM, CSF