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Utah Public Health Laboratory

West Nile Virus

Fee: Please refer to fee schedule

Ordering Recommendation

West Nile Virus (WNV) PCR is for qualitative detection of West Nile virus in mosquito pools.


Tuesday – Friday depending on season.


Polymerase Chain Reaction (PCR)


Up to 7 days

Specimen Required

  • Collect:Mosquitos = 10-100 insects, pooled by species
  • Specimen Preparation: Place mosquitoes in 2 milliliter snap cap Eppendorf micro tube.
  • Storage/Transport Conditions:Keep at 2 – 8 degrees C.
  • Unacceptable Conditions: unlabeled or empty tubes
  • Remarks:Record location and date of collection. Species of source animal. Number of insects per tube
  • Stability: Mosquitoes must be received at UPHL within 48 hours of collection.


Detected or Not Detected

Interpretive Data

West Nile virus detected or not detected.



Cross References

Arbovirus PCR Panel

Saint Louis Encephalitis Virus PCR

Western Equine Encephalitis Virus PCR