An abdominal ultrasound for a cat costs $300-600 at most hospitals, and a cardiac echo (echocardiogram) runs $400-800. Sedation, when needed, adds $80-150. The scan itself takes 20-40 minutes; the price is set by who holds the probe, not by machine time.
That gap between $300 and $600 is the single most useful thing to understand before you book, because the same study can be quoted at either end depending on three factors you can ask about in advance.
What separates a $300 scan from a $600 scan
Three things move the number. First, who performs it: a general practitioner with 2-3 days of ultrasound training will charge $250-350, a board-certified radiologist or cardiologist $450-700, and an internal medicine specialist sits in between at $380-550. Second, the report: a written report with measurements and images adds $50-120, a verbal summary at discharge adds nothing. Third, the setting: a mobile specialist visiting your clinic charges $150-250 per case on top, and an emergency hospital at 2 a.m. applies a $100-200 after-hours fee. Ask for the itemized estimate before the cat goes back.
Price by study type
| Study | Typical price | Duration | Sedation | What it answers |
|---|---|---|---|---|
| Abdominal, full | $300-600 | 25-40 min | $80-150 | Kidneys, bladder, liver, bowel, nodes |
| Abdominal, focused | $180-320 | 10-20 min | $0-80 | One organ or one bladder stone |
| Cardiac echo | $400-800 | 30-50 min | $80-150 | Wall thickness, chamber size, flow |
| Cardiac, repeat | $300-500 | 20-30 min | $0-80 | Response to heart medication |
| Thoracic, limited | $250-450 | 20-30 min | $80-150 | Fluid, masses near the heart |
| Pregnancy check | $150-300 | 10-20 min | $0 | Fetal count, viability |
Why so many cats need sedation
Ultrasound requires 20-40 minutes of still, clipped skin, and most cats will not hold still for a probe pressed into the flank. Roughly half of the cats I see quoted for sedation need it, and the fee is $80-150 for an injectable protocol, or $60-120 for oral gabapentin given 90 minutes before. Fasting for 8-12 hours improves the image and is free. Shaving a 10x10 cm window on each side is included in the price; a clinic that charges $25-40 for clipping is nickel-and-diming you.
There is a middle path that costs nothing. Wrap the cat in a towel with the front paws tucked, keep other animals out of the room, and put the cat's own blanket on the table; roughly 4 in 10 cats booked for sedation manage with that plus a 10-minute quiet period. Ask whether the clinic will try unsedated first and charge only if the drug is actually drawn.
Cardiac echo is a different purchase
An echo answers a narrower question than an abdominal scan: is the heart muscle thicker than 6 mm (the cutoff for hypertrophic cardiomyopathy in most cats), are the atria enlarged past a left-atrium-to-aorta ratio of 1.5, and is there outflow turbulence. Because the measurements are what matter, the operator's certification matters more here than anywhere else: a $400 echo from an experienced cardiologist beats a $250 echo that produces 3 numbers and no ratio. Cats with a heart murmur, a gallop rhythm, or a breed predisposition (Maine Coon, Ragdoll, British Shorthair) should get the $400-800 study, not the cheap one.
How often to repeat
A normal abdominal scan in a cat with no findings is repeated at 12 months, or not at all if the bloodwork stays clean. Chronic kidney disease (CKD) staging repeats every 3-6 months. A bladder stone checked after a diet change repeats at 4-8 weeks. Cardiac patients on medication echo at 3-6 months after starting, then every 6-12 months once stable, and any cat with a worsening murmur gets one within 2-4 weeks. Writing the next date on the discharge sheet prevents the most common waste: repeating a full $600 study when a $180 focused view would do.
When ultrasound is the wrong test
Ultrasound shows structure, not function, and it cannot see through gas. A cat with vomiting and a suspected foreign body often needs radiographs first ($120-250 for 2 views) because gas and bone read better on film. A cat with a urinary blockage needs a $60-120 catheter and bloodwork, not a scan. And a stable older cat with mildly raised kidney values gets more from a $90-150 blood panel plus a $40-70 blood pressure reading than from a $500 scan; use the scan when the panel and the exam disagree.
One more rule: do not repeat a scan to reassure yourself. If the first study was normal and nothing has changed in 3 months, a second $500 scan answers a question nobody asked. Put that money into bloodwork at the 6-month mark and a pressure check at the same visit. Keep the printed estimate: clinics honor a written range more reliably than a phone quote, and half the difference between two hospitals is simply which line items each one bundles in.
Getting the estimate in writing
Ask for four lines: scan fee, sedation fee, report fee, and the recheck interval in months. Compare that against a full visit at what a vet visit costs, and if the total passes $800, price the alternative workups in the same breath. Cats that reach dialysis or transfusion territory face costs in the thousands, which our transfusion and dialysis cost breakdown lays out; a $500 scan that catches CKD at stage 2 is cheap by comparison. Run your own total in the cost calculator before you commit.
- Ask who holds the probe and whether a written report is included.
- Fast the cat 8-12 hours; skip the $25-40 clipping fee by asking first.
- Budget sedation at $80-150 unless the cat is reliably handleable.
- For murmurs, pay for the echo with measurements, not a screening scan.
- Put the next scan date on the discharge sheet the day you leave.
Terms mentioned in this article
Frequently asked
Why is one clinic quoting $300 and another $600 for the same ultrasound?
The operator sets the price. A general practitioner with basic training charges $250-350, a board-certified specialist $450-700, and a written report adds $50-120. Mobile specialists add $150-250 per case. Ask who performs the scan and whether measurements are included before you compare quotes.
Does my cat really need to be sedated for an ultrasound?
About half of cats do, because the scan needs 20-40 minutes of stillness with a probe pressed into the flank. Sedation costs $80-150 injectable or $60-120 oral. Fasting for 8-12 hours and a quiet room reduce the need, but a struggling cat produces images too poor to read.
How often should a cat with kidney disease have an ultrasound?
Staging is repeated every 3-6 months once chronic kidney disease is confirmed, usually alongside bloodwork and blood pressure. A normal scan with no findings is repeated at 12 months, or skipped if the panel stays clean and the cat is stable.