West Nile Virus Testing



To assist in the diagnosis of West Nile virus (WNV) infection.

Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction.

Normal Findings
(Method: Enzyme Linked Immunosorbent Assay [ELISA] is generally used for clinical specimens, and polymerase chain reaction [PCR] is generally used for testing specimens from potential donors of blood products, cellular therapy, or solid organ transplants.) Normal findings for ELISA (IgG & IgM): negative; for NAT viral RNA: negative.

Critical Findings and Potential Interventions
Specific infectious organisms are required to be reported to local, state, and national departments of health. Lists of specific organisms may vary among facilities. State health departments provide information regarding reportable diseases, which can be accessed at each state health department Web site. The CDC provides information regarding national notifiable diseases at https://ndc.services.cdc.gov /search-results-year.

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