MSPCA-Angell Headquarters

350 South Huntington Avenue, Boston, MA 02130
(617) 522-7400
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Angell Animal Medical Centers – Boston

350 South Huntington Avenue, Boston, MA 02130
(617) 522-7282
angellquestions@angell.org
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Angell West

293 Second Avenue, Waltham, MA 02451
(781) 902-8400
For on-site assistance (check-ins and pick-ups):
(339) 970-0790
angellquestions@angell.org
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Angell at Essex

565 Maple Street, Danvers, MA 01923
(978) 304-4648
essex@angell.org
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Animal Care and Adoption Centers – Boston

350 South Huntington Avenue, Boston, MA 02130
(617) 522-5055
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Animal Care and Adoption Centers – Cape Cod

1577 Falmouth Road, Centerville, MA 02632
(508) 775-0940
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Animal Care and Adoption Centers – Nevins Farm

400 Broadway, Methuen, MA 01844
(978) 687-7453
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Animal Care and Adoption Centers – Northeast Animal Shelter

347 Highland Ave., Salem, MA 01970
(978) 745-9888
More Info

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From an online gift to a charitable gift annuity, your contribution will have a significant impact in the lives of thousands of animals.

I-131 Therapy

At Angell, we offer expert care and cutting-edge treatment for feline hyperthyroidism using radioactive iodine (I-131). This highly effective therapy targets and destroys overactive thyroid tissue, allowing normal thyroid function to resume. Administered by our specially trained staff, in collaboration with our two staff veterinarians, I-131 is a safe and proven solution for your cat’s health. Our team works under the guidelines of the Massachusetts Radiation Control Program to ensure the highest safety and efficacy standards.

Services

 

The MSPCA-Angell’s specialized approach to I-131 therapy offers faster access, tailored treatments, and superior post-care support, distinguishing us from other veterinary hospitals.

  • Fast Access to Treatment – Consultations in 1-2 weeks, treatment in 2-4 weeks.
  • Advanced Imaging – Precise thyroid scans ensure customized I-131 dosing.
  • Exclusive Post-Treatment Boarding – Up to 2.5 weeks of care for radiation safety.
  • Customized Iodine Dosing – Tailored treatment minimizes side effects.
  • High-Dose Therapy for Severe Cases – Only hospital in the Northeast offering this option.
  • Compassionate Care for Anxious Cats – Specialized handling and sedation plans.
  • No Automatic Exclusions – Treating cats with pre-existing conditions.
  • Familiar Diet & Medications – Keeping your cat comfortable during treatment.
  • On-Site Advanced Diagnostics – Fast, accurate test results for optimal care.
  • Ongoing Support & Post-Treatment Care – Lab work and collaboration with your vet.

Before treatment, your cat will undergo thorough screening to evaluate overall health and identify other conditions. This screening includes:

  • Blood work
  • Urinalysis
  • Radiographs (X-rays)
  • Additional tests, such as an ultrasound of the heart or abdomen, if needed

Contact

350 S. Huntington Avenue
Boston, MA 02130

Phone: 617-522-7282
Email: i131@angell.org
Fax: 617-989-1657

I-131 Team

I-131 Team

Meet the I-131 Team

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I-131 Therapy Program Information for Clients

I-131 Therapy Program Information for Clients

Pre-Treatment Requirements

Pre-Treatment Requirements

Download the pre-treatment requirements checklist here.

Click to Download