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West Nile Virus Antibody Panel, IgG and IgM | | Updated | 10/5/2009 | | Other Names | | | How to Order | Check the West Nile Virus box on the Virology/Immunology Request (Form 42) | | Availability | All Clients | | Methodology | | | Performed | Monday through Thursday | |
Time to Reporting
| Within 3 working days from receipt of specimen. | |
CPT Code
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Specimen Collection Details
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Collection
| One 7 ml red top tube or serum separator tube (SST). Plasma or cerebrospinal fluid (CSF) are also acceptable specimen types. | |
Optimal Volume
| Blood: 5-7 mL; Serum or Plasma 1-2 mL; CSF 1-2 mL | |
Minimum Volume
| Blood: 3 mL; Serum or Plasma 1 mL; CSF 1 mL | |
Handling
| After blood clots, keep specimen refrigerated until transport. DO NOT FREEZE. If possible remove the serum from the clot as soon as possible. Keep CSF refrigerated. Sample must be tested within 7 days of collection. | |
Transport
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Rejection Criteria
| CSF specimens with volumes less than 1 mL; contaminated specimens; specimens received without proper patient identifiers on specimen tube and/or request form; and specimens received with requests without submitter information. | |
Comments
| This test is intended to be used as a semi-quantitative means of detecting West Nile virus-specific IgG and IgM in serum and CSF samples where there is a clinical suspicion of West Nile virus infection. This test should not be used solely for quantitative purposes and the results should only be used in conjunction with clinical history and other data. Because other members of the Flaviviridae family show extensive cross-reactivity with West Nile virus, serologic testing for St. Louis encephalitis is also performed. |
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