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8167: West Nile Virus IgG Antibodies [EIA] Print View
West Nile Virus IgG Antibodies EIA  < 1.30  Index 

PRIMARY
1 Serum 1 (0.5) mL   Room Temperature - 7 Day(s)/Refrigerated - 14 Day(s)/Frozen - 2 Month(s)  
ALTERNATE

This assay is for the qualitative detection of IgG antibodies to flaviviruses including West Nile virus in serum as an aid to the diagnosis in patients with clinical symptoms and past exposure consistent with Flavivirus (West Nile virus) infection. This assay can cross react with other flaviviruses such as Dengue Fever and St. Louis Encephalitis viruses.
Setup Schedule
Wednesday, Saturday

Reported (Analytical Time)
Same day

CPT Code
86789

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Notes
1. IgG assay cross-reactivity has been noted with some specimens containing antibody to cytomegalovirus (CMV). On reactive results, there is a possibility of cross-reactivity with CMV and bunyaviruses, e.g. LaCrosse virus. These diseases must be excluded before confirming diagnosis. IgG positive results must be confirmed by plaque reduction neutalization test, or by using the recent CDC guidelines for diagnosis of West Nile encephalitis. 2. It is recommended that samples with equivocal results be tested using a different method; or the patient may be re-drawn two or more weeks later and re-tested with this assay. 3. The absence of IgG antibodies is presumptive evidence that the patient was not infected with West Nile virus or another flavivirus. However, the sample may have been drawn before antibodies were detectable or the patient may be immunosuppressed. If infection is suspected, then another sample should be drawn 7-14 days later and tested.






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