The Cat Doctor Feline Medical Center

2900 Youree Drive
Shreveport, LA 71104







The Cat Doctor – Hyperthyroid Treatment Center is excited to invite you to refer your hyperthyroid patients to cure this disease. This is the first Radio-Iodine Therapy Center in the area and makes treatment more accessible for many hyperthyroid patients in the Ark-La-Tex. If required, we offer double wide condos for a comfortable stay with windows and bird TV. Accommodations for weekend admitting and discharge are available.

I hope this is the option you choose for your cat because it is the best option. Radio-Iodine is safe and effective with no physical side effects.




See for yourself how Radio-iodine compares to Medication!


What to Expect with Radio-Iodine Therapy


I-131 Unit I-131 Unit


Radioactive iodine, radio-iodine(aka 1-131 or RAI) has been used to treat hyperthyroidism in humans for over 50 years. The first reported use of radioiodine in hyperthyroid cats was in 1980 (Peterson ME et al, Scientific Proceedings of the American College of Veterinary Internal Medicine, p 124, 1980). Radioiodine therapy is a safe and effective choice for treating hyperthyroidism in most cats. However, cats that have other serious disorders, such as renal failure (kidney disease) and/or advanced heart disease, are not considered good candidates for radioiodine therapy.

Treatment does not generally cause any adverse side effects from the radioiodine as the delivery of radiation is targeted to the overactive thyroid gland. The radioiodine treatment consists of an injection under the skin on the day of admission to the unit. After your cat has been treated, all they need to do is eat, sleep, and be a cat while the radiation within the body dissipates. Aftercare instructions will be discussed before treatment. If the aftercare and waste disposal requirements cannot be performed, treatment will be denied.

Depending on dose and/or circumstances boarding of your cat may be necessary. If boarding is required, your cat will stay in a comfortable Kitty condo with a view outside. Litter is changed regularly, and fresh food and water are always available. We like to spoil all our patients as much as safely permissible. During hospitalization, we provide favorite foods, diversions, and bird TV. Let us know if your cat has any special requirements so that we can make their visit as comfortable as possible. 

The treatment protocol and requirements will be discussed at length during the initial consultation.

We expect that over 95% of the hyperthyroid cats treated with radioiodine will become normal (euthyroid) within 1-3 months of therapy (Peterson ME, et al. Radioiodine treatment of 524 cats with hyperthyroidism. Journal of the American Veterinary Medical Association 207: 1422-1428, 1995). Less than 5% will become hypothyroid (too little hormone made) and may require oral thyroid hormone replacement therapy. Less than 5% of treated cats will remain somewhat hyperthyroid after their initial treatment dose. Cats with persistent hyperthyroidism can be re-treated 6 months after initial therapy.

What to know:

  • Referral requirements are available at the Patient Referral Form link.

  • If your cat is receiving thyroid medication, Felimazole or Methimazole, these medications should be discontinued at least 5-7 days prior to therapy with radioiodine.

  • Hill’s Y/D diet should be discontinued at least 2 weeks prior.

  • There are no restrictions on food or water for treatment day. Your cat can eat and drink normally prior to treatment.

  • Pets may not be boarded/hospitalized elsewhere until they meet the requirements for release.

  • Upon discharge, your cat will possess a low level of radioactivity, which is voided primarily through urine and feces. You do not need to isolate your cat totally from people or pets, but you must follow certain safety precautions and collect the urine and feces for a specified time. Because of the natural decay of radioactivity and the continual loss of radioiodine through the urine and stool, your cat will have no detectable level of radioactivity a few weeks after discharge. When the patient is released from the facility, you will be given safety information and after care instructions on how to manage your cat's waste.

  • This one-time treatment is sufficient to normalize thyroid function in 98% of cases. However, if in the rare case, sequential thyroid function assessments indicate persistent hyperthyroidism or recurrence of the hyperactive state, then another course of I-131 may need to be scheduled if deemed appropriate.


Requirements for referral can be found here Referral Form


The fee for radioactive iodine (I-131) therapy is $1200.00. This includes a consultation before and after treatment, the admission and discharge office calls, initial physical examination, radioactive iodine dose and administration, monitoring, and radioactive waste disposal during stay. This fee does not include any boarding fees if considered necessary.

For more information, please call our office at 318-869-2280 during regular office hours.

Payment is due upon admission to the I-131 Unit. We accept cash, personal checks, VISA, MasterCard, Discover, American Express, and Care Credit.