• Skip to primary navigation
  • Skip to main content
  • Skip to footer
  • Locations:
  • Canyon
  • Center
  • College Station
  • Gonzales
  • TVMDL Career Center
  • Contact Us

Texas A&M Veterinary Medical Diagnostic Laboratory

Apple App

download on the Apple App Store
download the app on Google Play

Search

Translate:

  • Find a Form
  • Deliver a Sample
    • Specimen Collection Information
    • Packaging Samples for Shipment
    • Drop Off a Sample
    • Cremation
    • Order Supplies
  • Client Portal
    • Get Test Results
    • SVA Portal
    • Pay a Bill
  • Become a Client
  • Resources
    • TVMDL Bovine Testing Guidance and Reference Material
    • Diagnostic Plans
      • Bovine Syndromic Diagnostic Plans
      • Equine Syndromic Diagnostic Plans
      • Small Ruminant Syndromic Diagnostic Plans
      • Small Animal Syndromic Diagnostic Plans
    • Education Library
    • Case Study Library
    • Electronic Reporting: QR Coding Process
    • CoreOne Resources
  • About Us
    • Locations and Hours
    • Agency Leadership
    • Speaker’s Bureau
    • Texas Pullorum-Typhoid Program
    • TVMDL Mobile app
    • Contact Us
  • Locations
    • College Station Laboratory
    • Canyon Laboratory
    • Center Laboratory
    • Gonzales Laboratory
  • Contact Us

West Nile Virus (PRNT) [Referral]

Detection of antibodies to West Nile virus using the plaque reduction neutralization test (PRNT). This test is used to assess vaccine titers in horses or to test non-equine species for antibodies to West Nile virus.

NameWest Nile Virus (PRNT) [Referral]
Code8064
SectionSerology, Virology
SpeciesEquine, Exotic
Specimen

2 mL serum

Sampling Requirements

Collect serum from clotted blood in a non-additive tube (e.g. plain red top or serum separator). When possible, transfer clear serum off the clot into a new tube. Excessively hemolyzed samples are not acceptable for this test.

Collection Container

Glass or plastic tube with no anticoagulant additives.

Packing Instructions

Label all samples with unique identifiers. 

For multiple samples, number tubes consecutively using a permanent marker or adhesive label. Include a list of sample names/numbers or the Excel specimen import spreadsheet with submittal form. Place the tubes in consecutive, numerical order in cardboard boxes designated for tubes. Do not submit loose in bags. 

Use cold packs during hot weather, especially if shipping serum samples on the clot. Overnight shipping is recommended.

Special Instructions

This test is performed at the USDA National Veterinary Services Laboratory in Ames, IA. Prices listed for tests performed outside TVMDL may not include referral lab accession fees and are subject to change without notice. A processing and forwarding fee is added to all referral tests. Turnaround times vary depending on shipping time and the referral lab's schedule. Please include a clinical history and county of origin for all equine encephalitis serology requests. This test is most appropriate for assessing vaccine titers in equines; please request the IgM ELISA for clinically-ill animals.

This referral is handled by the Virology Section in Canyon and the Serology Section in College Station. 

Price$24.00
Schedule
Lab Schedule Turnaround time

Footer

For Employees

  • Employee Email
  • TVMDL Rules & Procedures
  • TVMDL Career Center
  • Emergency Alert Systems
  • AgriLife People Directory
  • AgriLife Administrative Services
  • TAMUS Single Sign On
  • Facebook

State of Texas

  • Texas.gov Portal
  • Texas Veterans Portal
  • Statewide Search
  • Texas Homeland Security
  • Risk, Fraud, & Misconduct Hotline

Policies

  • Privacy and Security Policy
  • Accessibility Policy

Sign up for our species-specific newsletters!

Sign up for our species-specific newsletters!
  • Texas A&M AgriLife
  • Texas A&M Veterinary Medical Diagnostics Laboratory
  • Texas A&M Forest Service
  • Texas A&M AgriLife Extension Service
  • Texas A&M AgriLife Research

483 Agronomy Rd
College Station, TX 77843