Overview Witness® Heartworm Test Kit detects the soluble antigen Dirofilaria immitis in dog or cat blood. The test is recommended for use when clinical history and/or signs suggest heartworm disease or where a rapid verification of heartworm infection is required.

  • Excellent sensitivity (97.7%) and specificity (99.3%)
  • Accurate and reliable results across multiple populations
  • Rapid time to results; approximately 10 minutes
  • Easy to use, simple to interpret results
  • No refrigeration, warming, mixing, sample prep, waiting or snapping required