PetCushing's disease (hyperadrenocorticism) is common in middle-aged and older dogs — most often a benign pituitary tumour driving excess cortisol. It's manageable but not curable in most cases, which means daily medication and lifelong monitoring. Here's what that costs in Canada and the insurance timing that matters.
What it costs in Canada
| Scenario | Typical cost (CAD) |
|---|---|
| Diagnosis (ACTH stimulation / LDDS testing) | Can be several hundred dollars — multiple tests |
| Daily trilostane (Vetoryl) | Roughly $80–$250/month by dog size |
| Compounded trilostane (alternative) | Often 30–50% cheaper than branded |
| Monitoring bloodwork (several times/year) | Recurring — doses are adjusted over time |
| First-year total (diagnosis + meds + monitoring) | Commonly $1,500–$5,000+ |
| Ongoing yearly cost | Roughly $500–$2,000/year |
| Managing complications / other conditions | Variable — common in senior dogs |
Cushing's is a long game: the diagnosis itself is involved (it often takes more than one test to confirm), and once treatment starts, trilostane must be given daily for life with regular bloodwork to keep cortisol in a safe range. Pituitary-dependent Cushing's — the most common form (~85% of cases) — is treated medically; the rarer adrenal-tumour form may involve surgery. Compounded trilostane and online pharmacies can reduce the monthly cost.
With insurance vs paying out of pocket
| Scenario | You pay | Insurer pays |
|---|---|---|
| No insurance | Diagnosis, every refill, and every monitoring test — for life | $0 |
| Comprehensive policy (diagnosed after enrolment) | Annual deductible + your reimbursement share | Reimburses 70–90% of medication and monitoring after deductible |
| Comprehensive policy (Cushing's pre-existing) | Full lifetime cost of management | $0 — pre-existing exclusion |
| Wellness add-on only | Full cost — it's a chronic illness, not preventive care | $0 from wellness portion |
Does Cushing's treatment cost vary by city?
Less than most conditions on this site. Cushing's is managed with daily trilostane and periodic ACTH-stimulation blood tests — a pharmacy medication plus monitoring, both fairly uniform across the country — rather than a specialist surgery that clusters in big cities. Exam and bloodwork fees run a little higher in major metros (Toronto, Vancouver, Calgary, Ottawa, Montreal) and lower in smaller markets, but the bigger levers on your total are your dog's size (which sets the trilostane dose) and how often monitoring is needed, not where you live.
The one place geography can matter is diagnosis and tricky cases: confirming Cushing's sometimes takes more than one test, and distinguishing the pituitary form from the less common adrenal-tumour form (which may be surgical) can involve an abdominal ultrasound or a referral to an internal-medicine specialist — and those specialists are concentrated in larger centres. For routine, stable management, though, your regular vet anywhere in Canada can handle it, and the ongoing cost is broadly the same wherever you are.
Considering insurance?
Cushing's is a chronic, lifelong cost that lands in a dog's senior years — and like diabetes or feline hyperthyroidism, once it's diagnosed no new policy will cover it. That's why insuring a dog while it's still middle-aged and healthy matters: a policy in place before the diagnosis covers years of medication and monitoring. Compare Canadian insurers before the senior years.