Heartworm Testing for Pets

Heartworms are parasites that threaten the well-being of your pet. It is strongly advised to have your pet on preventative treatments as the disease can lead to heart failure, lung disease, organ damage and possible death. Heartworms are more commonly found in puppies and dogs but cats can also become infected.

What is heartworm disease in pets?

Heartworm disease is a serious illness in pets that can lead to fatality. The disease is usually contracted through mosquito bites. Worms live inside the mosquitoes for a short time and are passed off to pets where they mature and produce offspring. The worms can grow up to 1 ft. long and live in the heart, blood vessels and lungs. If left untreated heartworms will reproduce and damage vital organs. To get your pet tested for heartworms contact us at 905.727.3003.

What are signs of heartworms in my pet?

Signs of heartworms mostly develop when the infestation is advanced, for this reason regular testing is necessary. The signs can range from mild to life-threatening if left untreated. Typical signs of heartworms include:

  • Loss of appetite
  • Fatigue
  • Reluctance to exercise
  • Persistent cough
  • Heart failure

    How is heartworm disease diagnosed in pets?

    To diagnose heartworms a veterinarian will run a blood test. The small amount of blood collected from your pet is examined for the presence of heartworm proteins. In addition to lab work our team may run tests to check for liver and kidney function, along with X-rays for the chest.

    How can I prevent heartworms in my pet?

    To prevent heartworms in your pet you should begin prevention treatment early. Our veterinarians will prescribe monthly medications which can be tablets or topical liquids. It is very important to follow a strict prevention plan as missed or late doses can leave your pet vulnerable to an infestation. Your pets should also be vaccinated against heartworms. Each shot lasts 6-12 months so they will need booster shots all throughout their life. The preventative treatments that your pets receive may also protect them from other parasites.

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    Last updated: August 5, 2021

    Dear Clients,

    Our team continues to be here for you and your cherished pets. We are OPEN and are now able to provide a wide range of services. Based on the current provincial changes, 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!


  • Continue our "closed waiting room" policy to protect our clients and staff. When you arrive, please remain outside the hospital and use your cell phone to call us. We will take a history of your pet's health and discuss any concerns. A staff member will then meet you outside to bring your pet into the hospital for an examination. The Veterinarian will call you to discuss the recommended treatment plan. After your appointment, a staff member will return your pet to you outside, and take care of any needed medications and payment.
  • Continue the use of credit cards as the preferred payment method.
  • Continue with curbside pickup of food and medication (unless you have used our online store and are having your order delivered directly to your home). To place an order through our online store, visit our website and click on "Online Store".

    We are OPEN with the following hours:
    Monday to Friday: 8:00 am - 7:00 pm
    Saturday: 9:00 am - 3:00 pm
    Sunday: Closed
    Note: We are closed the Saturdays of long weekends.


    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.

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

    - The team at Golf Glen Veterinary Clinic