Updated 2026-09-06 · Prices in USD · Recall feed checked daily
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Home United States vet costs Hyperthyroidism, radioiodine (I-131)
🇺🇸 United States · Emergency & major

Hyperthyroidism, radioiodine (I-131) cost across United States

One-off radioactive iodine treatment that cures more than 95 percent of hyperthyroid cats, including the required isolation stay.

$1,360–$2,975national typical range (USD)
San Franciscomost expensive city
San Antonioleast expensive city
Top 10

Where it costs most

Save money

Ways to pay less

  • Vets normally trial methimazole for four to six weeks first, because treatment can unmask hidden kidney disease.
  • Cheaper over a cat's remaining life than years of daily tablets and monitoring.
Insurance check

Insured cats in Atlanta would get roughly $1,950 of this back.

Typical plans reimburse 80–90% after the deductible, for about $38–$80/month for a young cat.

Full table

All 39 cities

CityTypical rangeIndex
San Francisco CA$1,905–$4,165
New York NY$1,835–$4,015
San Jose CA$1,770–$3,870
Los Angeles CA$1,700–$3,720
Boston MA$1,700–$3,720
Washington, DC DC$1,700–$3,720
San Diego CA$1,630–$3,570
Seattle WA$1,630–$3,570
Sacramento CA$1,605–$3,510
Chicago IL$1,495–$3,275
Miami FL$1,495–$3,275
Portland OR$1,495–$3,275
Denver CO$1,470–$3,215
Philadelphia PA$1,430–$3,125
Tampa FL$1,400–$3,065
Austin TX$1,385–$3,035
Minneapolis MN$1,385–$3,035
Salt Lake City UT$1,385–$3,035
Raleigh NC$1,385–$3,035
Atlanta GA$1,360–$2,975
Richmond VA$1,360–$2,975
Las Vegas NV$1,335–$2,915
Milwaukee WI$1,335–$2,915
Boise ID$1,335–$2,915
Dallas TX$1,320–$2,885
Pittsburgh PA$1,320–$2,885
New Orleans LA$1,320–$2,885
Kansas City MO$1,305–$2,855
Buffalo NY$1,305–$2,855
Houston TX$1,290–$2,825
Phoenix AZ$1,290–$2,825
Nashville TN$1,290–$2,825
Cleveland OH$1,280–$2,795
Charlotte NC$1,265–$2,765
Albuquerque NM$1,265–$2,765
Oklahoma City OK$1,250–$2,735
Detroit MI$1,225–$2,680
Columbus OH$1,225–$2,680
San Antonio TX$1,195–$2,620
FAQ

Questions

What is the average cost of hyperthyroidism, radioiodine (i-131) in United States?

Nationally $1,360–$2,975 in 2026. San Francisco is the most expensive city we track; San Antonio the least.

Why do prices vary so much between cities?

Rent, staff wages, equipment and competition. Big-city specialty hospitals can charge double what a rural clinic does for the same procedure.

Does pet insurance cover hyperthyroidism, radioiodine (i-131)?

Yes, on most accident-and-illness plans after the deductible.

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