Companion Animals

Cat Hyperthyroid Radioiodine Treatment

Radioiodine therapy is the gold standard curative treatment for feline hyperthyroidism, offering permanent resolution with a single treatment and minimal side effects compared to lifelong medication.

Key Facts

Radioiodine selectively destroys hyperfunctioning thyroid tissue while sparing normal cells
A single treatment achieves cure in over 95% of treated cats
Cats require 3-4 weeks of isolation after treatment while radioactivity clears
Renal function must be carefully monitored as hyperthyroid masking of CKD may be revealed
Cost is comparable to 2-3 years of medication making it economically rational long-term

Welfare Considerations

Radioiodine cure eliminates the welfare burden of daily medication administration and potential drug side effects. It is the treatment of choice for cats where CKD masking risk is acceptable.

What You Can Do

Discuss radioiodine treatment eligibility with your vet or specialist
Prepare for the 3-4 week isolation period required post-treatment
Ensure renal function is assessed before and after radioiodine treatment
Support expansion of radioiodine treatment access for cats in more geographic areas