How much does a heartworm test cost? What practices and low-cost clinics charge

A heartworm test costs a median of $35 at the 75 veterinary practices that publish the price, and most charge $25 to $40. Low-cost and nonprofit clinics publish a median of $25, across 116 clinics in 37 states. Practices and clinics posted these prices on their own websites, read by October 2026.

What a heartworm test costs

• At a veterinary practice: median $35. The middle half of published prices runs $25 to $40, across 75 practices.
• At a low-cost or nonprofit clinic: median $25. The middle half runs $20 to $30, across 116 clinics.
• A combination test that also checks for some tick-borne diseases: median $50 at 23 practices and $40 at 30 low-cost clinics.

What the test is

A heartworm test is a blood test that looks for signs of heartworm infection. Many practices run it in the clinic from a small blood sample, and some send it to a lab. Whether your dog needs one, and how often, is a question for your veterinarian.

What can change the price

• An exam fee. Some practices charge for a visit as well as the test. Where a practice publishes an exam fee, it is a median of $75.
• The kind of test. A combination test that also checks for tick-borne diseases is a median of $50 at a practice, against $35 for a heartworm test on its own.
• Who runs the clinic. Low-cost and nonprofit clinics publish a median of $25, and many run walk-in or appointment clinics for tests and vaccines.

What to ask when you call

• "Does the price include the exam?"
• "Is the test run here, or sent to a lab?"
• "Does it also check for tick-borne diseases?"

PawsRx is a platform, not a clinic. Prices are set by independent practices and change, so ask the practice to confirm the price for your pet before the appointment. Nothing here is veterinary advice. Whether and when a dog needs a heartworm test is a decision for you and your veterinarian.