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Test Code WNVIGM West Nile Virus (WNV) IgM Serology

Important Note

Date of onset is required for this order.

Serology is the recommended method of testing for WNV in both serum and cerebral spinal fluid (CSF), because viremia (as detected by PCR) is very transient.

Infectious

Specimen Required

Specimen Type: 1 mL Serum and/or 1 mL CSF

*  Negative results on specimens drawn less than 9 days from the date of onset should have a convalescent serum tested if active disease is suspected

 

Container / Tube: RED top blood tube (serum) or sterile container without transport media (CSF)

CPT Code

86788: Antibody, West Nile virus

Special Instructions

Transport Temperature: 2 - 30°C

Testing Schedule

Specimens are transported to the Montana Public Health Laboratory in Helena Monday thru Friday prior to testing.

 

Days Performed: Varies Monday through Friday

Turn-around Time: Specimens are routinely batch tested once per week. During seasonal outbreaks, testing may be performed each working day, depending on workload.

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