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Vanderbilt Pathology Laboratory Services

Test Directory



WEST NILE VIRUS DETECTION BY AMPLIFIED PROBE (WND)

Department: Molecular Infectious Disease
Test Synonym(s): WNV RNA, WND
CPT Codes: 87798
Methodology: PCR (Polymerase Chain Reaction)
Reference Range: Not detected
Tube Type: Lavender top (EDTA) - 4.0 mL, stem cells in a sterile container
Specimen: Whole blood, stem cells
Alternate Specimen: Need Medical Director approval
Pediatric Requirements: Lavender top (EDTA) - 1.0 mL
Volume: 1.0 mL
Minimum Volume: 0.2 mL
Temperature: Room Temperature: same day, refrigerated: overnight, frozen: longer than overnight
Stability: Room temperature: same day, refrigerated: overnight, frozen: longer than overnight
Reasons for Rejection: Alternative specimen sent without Medical Director approval
Days Performed: Thursday
Times Performed: Once per day on Thursday
TAT: 24 hours
Significance: WNV is a RNA virus transmitted by mosquitoes. The infection primarily involves birds; humans are incidental hosts. WNV was first recognized in the United States in 1999, when it caused an epidemic of meningoencephalitis on the east coast. It has been reported recently that WNV can be transmitted by organ transplantation. While detection of specific IgM antibody remains the choice of test for diagnosis, molecular testing has been the sensitive and specific testing for screening organs/cells in the transplantation service.
Special Instructions: Other sources / samples may be acceptable for this test; please check with the lab, 615-936-6435.
Click here to print the Molecular Diagnostics requisition.

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