19203 Aurora Ave N
Shoreline, WA 98133
(206) 546-1243


5506 Pacific Avenue
Tacoma, WA 98408
(253) 471-9200

Restoring Health & Happiness to Senior Cats Since 1992

Restoring Health & Happiness to Senior Cats Since 1992

For Veterinarians

FHTC Brochure

1. Labs to perform prior to referral (within 6 weeks) with cat not on Methimazole:

  • CBC
  • Chemistry Screen
  • Quantified Total T4
  • Urinalysis
  • Blood pressure (recommended, but not required)

 Free T4’s are typically not necessary. You are welcome to call Dr. Vaughan to see if a Free T4 is advised.

If your patient is currently taking Methimazole/Felimazole/Tapazole, you are welcome to call our office so we can discuss timing of labs for your patient. The true(non-medicated) thyroid hormone (T4) level  that is less than 6 weeks old is needed to determine a treatment dosage of I131.

To clarify, blood work done while cat is on Methimazole provides a skewed T4 result. An owner must abstain from giving Methimazole for at least 7 days before blood is drawn.

2. How should I prepare my client?
 Have client read this website prior to scheduling

3. When can my patient be seen? How far out is scheduling?
Normally we can see and treat your patient within 2-3 weeks

4.Why Does My Patient Need To Be Scheduled at a Specific Location (Shoreline vs. Tacoma) ?

The Shoreline office, our original location, has more staff and longer hours, therefore will examine and treat all cats that fall into the following categories:

  • Cats that are considered "medically fragile", i.e. have additional illnesses effecting the heart, the kidneys, etc. which is more likely in senior cats.
  • Feral cats or cats requiring sedation to be examined
  • Cats with a T4 level of 15 or higher
  • Any cat, no matter the dose

Our Tacoma office was established to treat cats in the Tacoma region that require low doses of radioiodine, i.e. a T4 level of less than 14.

5. What is the total cost of the treatment?

The cost ranges from $1345.00 to $1745.00, depending on what dose the cat receives. Dr. Vaughan determines the dosage during her consultation with the cat and the owner.

6. What is the success rate of the treatment?
Over 95% of cats we treat are permanently cured of hyperthyroidism

Thanks to Dr Faythe Vaughan, and her kind staff in Shoreline and Tacoma for giving us at least 5 extra, good quality, years with our buddy, Rocky! He was a rescue cat to begin with, and his good fortune continues! We highly recommend The Feline Hyperactive Thyroid Center for their... read more »

Tacoma, WA

I wanted to drop you and everyone at FHTC a note to let you know that Byron (the PAWS’ kitty FHTC treated pro bono earlier this year) was adopted last month! Even better, he was adopted with another senior, all-black kitty we had in care.... read more »

Seattle, WA

As a member of an animal rescue organization on Vashon Island (VIPP), as well as being a chronic cat owner, I've had many opportunities to visit the Feline Hyperthyroid Treatment Center. Over the past 30+ years, I've taken scores of cats to Shoreline for definitive... read more »

Vashon Island Pet Protectors
Vashon Island, WA

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