ARUP's Laboratory Test Directory
| 0098731: California Encephalitis Antibody, IgM by IFA, Serum |
| Test Mnemonic: CAL M SER | |
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Methodology: Indirect Fluorescent Antibody
Performed: Tue, Fri Reported: 1-5 days |
| Specimen Required: | |
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Collect: One 4 mL SST.
Transport: 1 mL serum at 2-8°C. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 0.15 mL at 2-8°C. Remarks: Remove from serum from cells ASAP. Acute and convalescent specimens must be labeled as such; parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Please mark specimen plainly as "acute" or "convalescent". Unacceptable Conditions: Plasma, heat-inactivated, severely lipemic, contaminated, or heparinized specimens. Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles) |
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| Reference Interval: |
| Less than 1:16 |
| Interpretive Data: | |
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This test is intended to be used as a semi-quantitative means of detecting California Encephalitis Group virus-specific IgM in serum samples in which there is a clinical suspicion of California Encephalitis Group virus infection. A positive result for IgM may suggest current or recent infection. This test should not be used solely for quantitative purposes, nor should the results be used without correlation to clinical history or other data. LaCross virus is related within the California Encephalitis Group and generally is reactive with antibody to other viruses within this group.
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| CPT Code(s): | |
| 86651 |