Arbovirus Antibodies, IgM, CSF
Ordering Recommendation
Not recommended as a stand-alone test. Refer to Arbovirus Antibodies, IgG and IgM, CSF (2001597).
New York DOH Approval Status
Specimen Required
CSF.
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)
Refrigerated.
New York State Clients: test code 60145, Ambient; test code 36597, Refrigerated
Contaminated, heat-inactivated , or hemolyzed specimens.
New York State Clients: NYSDOH will only approve West Nile Virus Antibody testing when performed as an IgG, IgM panel.
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. |
Laboratory Developed Test (LDT)
Note
Hotline History
CPT Codes
86651; 86652; 86653; 86654; 86788
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 |