Heartworm Testing for Pets

Heartworms are deadly parasites that may infect your loyal companion. The disease is more common in dogs but cats can also be infected. After a mosquito bites your pet they leave larvae that grow into adult heartworms. These worms can grow up to a foot long and reach blood vessels resulting in blood clots. What makes heartworm disease so life threatening is it can go undetected until the worms have increased in your pet. Heartworm disease can lead to heart failure, lung disease and sometimes death which makes prevention and testing important.

What are signs of heartworms in my pet?

The symptoms of heartworm disease may vary based on how long the pet has been infected and how many worms are present. The signs may not show in the early stages of the infection which is why our veterinarians recommend frequent testing. Some signs that may indicate heartworm disease in your pet are:

  • Weight loss
  • Loss of appetite
  • Continuous dry coughing
  • Difficulty breathing
  • Fatigue
  • Fainting

    How is heartworm disease diagnosed in pets?

    To diagnose heartworm disease in pets we test their blood. When a pet is infected traces of heartworm protein are found in the blood. Since these worms live inside the heart our team may perform X-rays to check the organ’s functionality.

    How can I protect my pet from heartworms?

    We encourage pet parents to get their pets started on prevention medication early. Pets should be vaccinated for heartworms every 6 to 12 months. If your pet becomes infected our team may prescribe medications in the form of topical liquids and tablets. Another way to protect your furry pal is to have them tested at least once every year. This can catch an infection early and reduce the effects and symptoms.

  • Last updated: March 2, 2022.

    Dear Clients,

    Based on the latest provincial guidelines for veterinary practices, below are some important updates to our operating policies.

    This includes vaccines, wellness exams, blood work, heartworm testing, spays and neuters, dental services, and more!


  • Face masks are only required in the exam room and must be worn properly over both the nose and mouth.
  • Continue to socially distance when interacting with others.
    Have you welcomed a new furry family member to your home? We’d love to meet them! Visit our Must Know New Pet Owner Information page for useful resources and helpful recommendations for new pet owners.


    Clearview Dog & Cat Hospital:
    Monday to Friday: 8:00 am - 5:00 pm
    Saturday: 9:00 am - 1:00 pm
    Sunday: CLOSED

    East Hill Dog & Cat Hospital:
    Monday to Friday: 8:00 am - 5:00 pm
    Saturday: 9:00 am - 5:00 pm
    Sunday: CLOSED

    Thank you for your patience and understanding and we look forward to seeing you and your furry family members again!

    - Your dedicated team at Clearview/East Hill Dog & Cat Hospital