Radioactive Iodine-What’s Involved

Radioactive iodine treatment - what's involved?

Has your cat been diagnosed with hypothyroidism? While there are several treatment options for cats with hyperthyroidism, radioactive iodine therapy is considered the gold standard for cats of all ages as it is simple, effective and safe. This curative, non-invasive solution specifically targets the thyroid, reducing side effects and eliminating the need for ongoing medication.

The best treatment for your cat depends on its age, health conditions and overall well-being. While radioactive iodine therapy requires an initial investment, it is usually more cost-effective over time than other options.

Cat radioactive iodine treatment

About the treatment process and how it works

At Cat Specialist Services, we provide a specialised facility for treating hyperthyroid cats with radioactive iodine (I-131).

This process involves a single oral capsule that destroys the thyroid tumour cells responsible for hormone production and is generally well tolerated by cats, with a high success rate.

Most cats will achieve normal thyroid hormone levels within a few weeks of treatment.

Before administering I-131 to cats, we begin with a thorough evaluation by one of our feline specialist vets.

This includes a physical examination, blood work assessment and possibly additional diagnostic tests to determine the severity of hyperthyroidism and rule out any underlying health conditions. Once the treatment plan is established, the cat will be admitted to our facility for treatment.

Cat inside an isolation ward

Isolation following treatment

Following treatment, cats must stay in isolation to allow the radioactive iodine to decay. This precaution aligns with Queensland Health guidelines to protect both cats and caregivers. Our state-of-the-art facility is designed to provide a comfortable, stress-free environment for your cat.

The isolation period usually lasts five to seven days, depending on the dosage administered. During this time, each cat enjoys a private unit featuring ample space to explore, soft bedding, ramps, natural sunlight and a lovely garden view. We even have cat TV!

Our experienced, compassionate team of feline specialists closely monitors their condition and provides essential care, including pain management and nutritional support. See here for radioactive iodine treatment FAQs.

Ongoing care for cats

Ongoing care for your cat

When the isolation period ends, cats can go home with their owners but need to remain indoors for an additional two weeks.

If this poses a challenge, cats can move from the radioactive iodine suite to our medical boarding suites. These suites also feature natural sunlight and plenty of sleeping areas, plus access to one of three themed playrooms—Harry Potter, Star Wars or Lord of the Rings!

Follow-up care is essential to ensure that the cat’s thyroid hormone levels remain normal and to monitor for any potential side effects. Our team will work with you to develop a plan for the ongoing management and care of your cat.

Are you worried about your cat’s health?

If you are concerned about your cat, please reach out to our friendly team. Call us on 1300 228 377 or fill out the contact form below. In an emergency, please contact your local vet.

For vets – to refer a patient or book a telehealth consultation, please call us on 1300 228 377, book through the portal or fill in the form.

Patient Stories

Our commitment to feline health is best seen in the stories of the cats we’ve had the privilege of treating. These journeys highlight the dedication, expertise and compassion that drive us.

Each patient faced unique challenges, and it was our honour to offer high-quality care and help them regain strength and happiness. We value the deep bonds with cats and their owners, knowing the difference we make in their lives.

Tango Triumphs Over FIP

At 5 months old, Tango was diagnosed with Feline Infectious Peritonitis (FIP). Once considered a fatal disease, the introduction of new treatments has significantly boosted the survival rate.

Toffee Survives Tick Paralysis

Toffee faced a frightening battle with tick paralysis and aspiration pneumonia, she was rushed to AES when her owners noticed her vomiting, breathing difficulties and trouble walking.

JJ & the Lily – a close call

Mischievous JJ had a close call when he ingested part of a lily—an extremely toxic plant for cats. Thanks to the quick actions of his owner, Sophie, a VSS vet nurse, JJ made a full recovery.

Han’s Hip Fracture Surgery

Han presented after limping on his hind leg for two weeks following an accident at home. An X-ray revealed a fractured growth plate in his hip, requiring surgery to repair the injury.

Coco and Kidney Troubles

Coco stayed with us at CSS while recovering from a nephrectomy (the surgical kidney removal). After months of unsuccessful treatment for a ureteral obstruction, this became necessary.

 

Contacting Us

Pet Owners
If you would like to talk about treatment for your cat, call us on 1300 228 377 or fill in the form.
In an emergency, please contact your local vet.

Vets and Nurses
To refer a patient or book a telehealth consultation please call us on 1300 228 377, book through the portal or fill in the form. For advice calls, please see the guidelines here.

Monday-Friday: 8 am-6 pm
Saturday/Sunday - Closed

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