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Business Details
We have provided radioactive iodine therapy for hyperthyroid cats since 1988. Our clinic was the first in the Pacific Northwest licensed to administer 131 I treatment for feline hyperthyroidism. We operate as a specialized veterinary nuclear medicine facility dedicated exclusively to this therapy. Our treatment uses a painless subcutaneous injection that allows cats to return home within four days. We ensure there are no radiation side effects because radioactive iodine selectively targets abnormal thyroid cells. Our approach is recognized as the safest, most effective, and ultimately least costly lifetime treatment for almost all hyperthyroid cats.

We have documented significant health improvements, such as weight gain and restored vitality, in treated patients. We maintain rigorous professional standards in nuclear medicine safety and patient care. We are committed to transparent communication with referring veterinarians and cat owners throughout the process. As we conclude our operations in Spring 2022, we remain dedicated to the care of our currently scheduled cases.
Highlights and features
  • We have provided 131 I therapy since 1988.
  • We were first in Pacific Northwest licensed for 131 I.
  • Our treatment has no radiation side effects.
  • Our patients return home four days after injection.
  • We operate a dedicated veterinary nuclear medicine facility.
Services
Radioactive Iodine Therapy
Our radioactive iodine therapy treats hyperthyroid cats with a single painless subcutaneous injection that selectively destroys abnormal thyroid tissue. The procedure requires a four-day hospitalization to ensure radiation safety before the cat returns home. This curative treatment eliminates the need for daily medication and provides a permanent resolution for feline hyperthyroidism.
Reviews (3)
Mary Bachmayer
Jan 11, 2021 Report
Dr. Evans has one of two feline hyperthyroid treatment clinics in OR. He was responsive, very nice to deal with and explained the procedure very well. The radioisotope therapy for my cat worked beautifully and she is nearly back to her former sweet self. I recommend this clinic to anyone who has a hyperthryoid cat; the radioisotope treatment is much kinder than lifelong methimazole medication.
Autumn Again
Nov 20, 2019 Report
Don't let your cat die from hyperthyroidism when you live near such a reasonably priced feline thyroid clinic! Dr. Evans saved my Charlie in 2011. If it weren't for his clinic - one of the least expensive feline thyroid clings in the U.S., and the nonprofit that was able to pay for the treatment because of that fact, Charlie wouldn't have gone on to live 5 more happy years and pass away from something totally unrelated. Highly recommended!
Sacha Hancock
Nov 01, 2018 Report
Dr. Evans was great and I can't say enough good things about this treatment! My cat "Jack" Is doing great now and it's only been 2 months! Truly blessed