Diagnostics are the part of a veterinary bill owners are least prepared for, because nothing has been treated yet. The pet is not better, the diagnosis may still be open, and the invoice already reads in the hundreds or thousands. This page gives the sourced US ranges for each test and names the publisher behind each figure. It also explains the thing most cost guides skip: why two honest quotes for the same MRI can differ by thousands of dollars.
How much does an X-ray cost for a dog or cat?
Radiographs are commonly quoted at $75 to $400 for a set of views, according to Pawlicy Advisor, and that is the widest published band we can stand behind. CareCredit puts the national average for two to three views at $172 for dogs and $158 for cats.
Two other sources give useful cross checks. Lemonade's January 2025 claims data shows X-rays billed at an average of $263 on real intestinal blockage claims, which is what a clinic actually charged rather than what a guide predicted. MetLife Pet Insurance's cost guide puts diagnostic X-rays for hip dysplasia at $150 to $250, a narrower band for one specific question.
Dental radiographs are priced separately from the rest of the body and are billed as part of a dental procedure, at about $187 per CareCredit. Those sit with the rest of the mouth in our guide to dog and cat dental costs. Billed costs vary widely by region and clinic.
How much does a pet ultrasound cost?
Ultrasound is commonly quoted at $300 to $800, per Pawlicy Advisor, which puts it several times the price of a plain radiograph. CareCredit's national averages sit at $483 for dogs and $323 for cats, and Lemonade's 2025 claims data shows an average of $333 as billed.
Ultrasound often follows radiography rather than replacing it, and Lemonade's blockage claims data reflects that directly: X-ray and ultrasound appear as separate line items on the same claims. That is the mechanism behind rising diagnostic totals. Each test answers a narrower question than the last, and the earlier ones stay on the invoice.
How much does a CT scan or MRI cost for a pet?
CareCredit puts a CT scan at $1,615 for dogs and $1,144 for cats, and MRI estimates run from about $1,000 to $7,500 depending on what the quote covers. The MRI spread is the widest in veterinary pricing, and the reason is scope rather than sloppiness.
- PetMD, writing about spinal surgery, puts the imaging component alone at $1,000 to $3,000.
- Pawlicy Advisor's dedicated dog MRI guide, reviewed by a veterinarian in July 2024, puts a dog MRI at $2,000 to $6,000.
- Pawlicy Advisor's general vet cost guide puts MRI at $1,500 to $7,500.
Those are not competing estimates of the same product. Pawlicy Advisor itemizes an MRI into six lines.
- Base MRI procedure: $2,000 to $4,000
- Anesthesia: $200 to $500
- Pre anesthesia testing: $50 to $150
- Specialist consultation: $250 to $500 and up
- Radiologist interpretation: $75 to $200
- Associated hospitalization: $300 to $800
We do not add those components into a single total, because no source publishes that sum and the components overlap differently at every hospital. The question to ask instead is short: which of those six lines does the quoted price include? A low quote that covers the scan alone and a high quote that bundles anesthesia, the specialist read and an overnight stay can describe the same appointment.
How much does pet bloodwork cost?
Bloodwork runs roughly $80 to $400 depending on how many panels are run, per Pawlicy Advisor, and the sources disagree most about the top of that range.
| Laboratory line | Reported figure | Source |
|---|---|---|
| Chemistry panel, dogs | $164 | CareCredit |
| Chemistry panel, cats | $144 | CareCredit |
| Complete blood count, dogs | $104 | CareCredit |
| Bloodwork, general range | $80 to $400 | Pawlicy Advisor, 2026 |
| Bloodwork in an emergency setting | $80 to $250 | Money |
| Bloodwork as billed on a real claim | $135 average | Lemonade, 2025 claims data |
| Pre surgical bloodwork | up to $200 | MetLife Pet Insurance |
Billed costs vary widely by region and clinic. One honest gap: a standalone complete blood count price for cats is not published separately by any source we checked, so we do not show one. Where a figure does not exist, we would rather say so than interpolate from the dog line.
Why can diagnostics alone reach four figures before treatment starts?
Because a single advanced scan is already a four figure line, and the routine tests around it stack on top of it rather than replacing it. Three sourced examples make the point without any addition on our part.
- CT alone. CareCredit puts a dog CT scan at $1,615. That is a four figure line item on its own, with nothing treated yet.
- MRI before spinal surgery. PetMD puts the imaging at $1,000 to $3,000 and the surgery itself at a separate $3,000 to $8,000, so the scan is a four figure decision made before the surgical one.
- An emergency workup. Money puts the initial diagnostic workup at $100 to $600 and the whole emergency visit at $250 to $8,000, citing CareCredit. Bloodwork at $80 to $250 and imaging at $150 to $600 sit inside that.
We do not publish a summed workup total, because no publisher does. What the three examples show is the shape of the problem. The diagnostic phase has its own price, it is settled before anyone knows the diagnosis, and it is often the part that arrives without warning. The emergency version of this arithmetic is worked through in emergency vet costs.
Does pet insurance pay for diagnostic tests?
Accident and illness policies pay for diagnostics that investigate a covered condition, and not for the same test run as routine screening or inside the workup of a pre-existing condition. That split is the one that produces most surprise denials, and it is set out in what pet insurance does not cover.
Two structural points are worth knowing before the scan is booked. Diagnostics for a condition that showed symptoms before your policy started are treated as part of that condition, which is the rule explained in pre-existing conditions. And because most policies reimburse after you pay, the four figure CT is money you front and claim back, minus the deductible and the reimbursement share; the mechanics are in how pet insurance claims work.
Our own dated premium figures are pending first quote run, so this page prices the veterinary care rather than the policy.
How do you keep a diagnostic bill from surprising you?
Ask for an itemized written estimate before the imaging is booked, not after. For advanced imaging, ask the specific question above: does this price include anesthesia, the radiologist interpretation and any hospitalization. For laboratory work, ask which panels are being run and whether the results change what happens next, because a test that will not change the plan is a test you can discuss.
The limitation on this whole page is worth stating plainly. Every imaging and laboratory figure here comes from a commercial cost guide or an insurer's claims analysis. No US veterinary teaching hospital we checked publishes a price list we could cite, and Colorado State University lists its services but has removed online pricing. Those commercial guides are the best evidence available and they are weaker than a published price list. Veterinary services inflation has run at 6.5 percent a year over seven years on BLS data reported by PetfoodIndustry, so treat any older figure as a floor. The full set of sourced procedure ranges sits in what vet care actually costs.