
Full Answer
How much does radioactive iodine treatment for cats cost?
The cost of any treatment for feline hyperthyroidism is significant. The cost for radio iodine therapy is generally a total fee of $1500- $1550, depending on the I131 dosage required for your cat's treatment. This includes the radio iodine itself, the cost of hospitalization, food, litter, and monitoring.
What are the long term side effects of radioactive iodine?
Long term side effects of radioactive iodine treatment vary depending on:
- your age
- other medical conditions
- your dose of radioactive iodine
How much does radioactive iodine treatment cost?
Thyroid cancer treatment typically is covered by health insurance, although some plans may not cover certain drugs or treatments. For patients without health insurance, thyroid cancer treatment typically costs from about $20,000-$40,000 for surgery and up to $4,000 for radioactive iodine treatment, which is often recommended for thyroid cancer.
How do you clean after radioactive iodine treatment?
- Avoiding physical contact with other members of the household, including sleeping alone
- Flushing your toilet twice after every use
- Washing your hands frequently with decontamination soap
- Avoiding cooking for others
- Using plastic gloves to cook
- Keeping all clothing and linens separate from the rest of the household

What happens if radioactive iodine does not work?
Thyroid cancer that no longer responds to radioactive iodine may become sensitive after starting anti-cancer drugs.
How long does it take for radioactive iodine to work in cats?
Most hyperthyroid cats respond fully to a single injection with radio-iodine. Their hyperthyroidism won't come back, and they don't need ongoing medication. Most cats respond to treatment within weeks, although some take up to 6 months to gain the full benefit.
How long do cats live after radioactive iodine treatment?
“Studies have shown that cats treated with I-131 live longer than those treated with pills,” added Mosenco, citing a study where I-131-treated cats lived an average of four to five years following treatment, versus an average of only two years for cats on medication.
What is the success rate of radioactive iodine treatment?
Conclusion: Radioactive iodine treatment is an effective modality for definitive treatment of hyperthyroidism with long-term cure approaching 80%.
Can hyperthyroidism return after radioactive iodine cats?
This happens in approximately 5-10% of hyperthyroid cats treated with radioactive iodine. If it happens, hyperthyroidism may return, necessitating a second radioactive iodine treatment or one of the other treatment options. Occasionally, normal thyroid cells are also destroyed.
What is the life expectancy of a cat with hyperthyroidism?
The median survival times reported are 25 (iodine 131 treatment),1 24 (radioiodine treatment),2 and 48 months (iodine 131 treatment),3 with a more recent paper citing 14 months (carbimazole or methimazole treatment alone or in combination with thyroidectomy).
Should I put my cat down with hyperthyroidism?
When to put a cat to sleep with hyperthyroidism is a heartbreaking decision. If your cat is in pain and has lost a lot of weight or declining health, then it may be time to consider euthanasia. If your cat, however, is still relatively healthy and comfortable, then you may want to wait a little longer.
Can cats survive radiation?
The overwhelming majority of cats (>95%) are cured by a single therapy with only a small percentage of cats requiring additional radioiodine therapy (4%) or becoming persistently hypothyroid (1%). Occasionally cats will act like they may have a sore throat for a couple of days after the radioiodine therapy.
Can cats recover from hyperthyroidism?
Fortunately, the vast majority of cats that develop hyperthyroidism can be treated very successfully and most cats will make a complete recovery.
Can thyroid come back after radioactive iodine treatment?
Once hypothyroidism has been achieved, it is usually irreversible with the patient requiring lifelong thyroid replacement. Early recurrences are reported in 20–54% of cases within 3–6 months, which can be due to inadequate RAI treatment or early Marine Lenhart syndrome.
How expensive is radioactive iodine treatment for cats?
$1500- $1550The cost for radio iodine therapy is generally a total fee of $1500- $1550, depending on the I131 dosage required for your cat's treatment. This includes the radio iodine itself, the cost of hospitalization, food, litter, and monitoring. This is comparable to the cost of surgical removal.
What are the long term side effects of radioactive iodine?
Possible long term side effectsAbility to have children (fertility) Some women may have irregular periods after radioactive iodine treatment. ... Inflammation of the salivary glands (where spit is made) ... Tiredness. ... Dry or watery eyes. ... Lower levels of blood cells. ... Lung problems. ... Second cancers.
How long does a cat stay radioactive after a shot?
However, because your cat will be radioactive for several days after receiving the shot, precautions must be taken during and after the treatment. While the treatment is fairly expensive, over the long term it could be cheaper than medication and is on a par with surgical treatment.
How to treat hyperthyroid cats?
Hyperthyroid cats suffer overactive thyroid glands, circulating too much thyroid hormone through their system and affecting nearly every organ. Radioactive iodine therapy offers a cure through a simple injection that returns thyroid function to normal levels. However, because your cat will be radioactive for several days after receiving the shot, precautions must be taken during and after the treatment. While the treatment is fairly expensive, over the long term it could be cheaper than medication and is on a par with surgical treatment.
How long can you leave a cat at a vet?
Since you'll have to leave your cat at the facility for several days or more, it's not a question of dropping him off at a distant veterinary hospital and then picking him up the next day. It requires two round-trips for you.
Is radioiodine safe for cats?
The Disadvantages of Radioiodine Therapy Treatment for Cats. Radioactive iodine therapy is becoming the treatment of choice for felines with hyperthyroidism. However, it may not be the best treatment for your particular cat. Weigh the pros and cons of various treatments and discuss options with your vet.
Can you wear protective clothing on a cat in the hospital?
He's radioactive, so it's not safe even for humans wearing protective clothing to spend too much time around him.
Can a cat eat other food if they have a thyroid problem?
It might not be an option for a frail cat who shouldn't undergo anesthesia. A prescription diet is available that lowers thyroid hormone, but for it to work your cat can't ever eat any other food.
What is the treatment for iodine in cats?
Radioactive Iodine Treatment (I-131) For Cats. Radioactive iodine (radioiodine or I-131) is used in the treatment of hyperthyroidism which is the most common endocrine (hormonal) disorder to affect cats. It is estimated that 10% of cats over ten of cats over the age of ten will develop the disease. The disease is caused by a benign, ...
How long before radioactive iodine treatment can cats stop methimazole?
Stop medications and/or special diets: The cat will stop methimazole (Tapazole) or carbimazole or Hills Y/D (a prescription diet low in iodine) 7-10 days before radioactive iodine treatment.
What to do if no kidney disease is unmasked?
If no kidney disease is unmasked, the specialist veterinarian can proceed with radioactive treatment. Electrocardiograph: A recording of the electrical activity of the heart to look for abnormalities. If found, an echocardiogram (ultrasound of the heart) will be necessary.
How does radioactive treatment work for cats?
How does radioactive treatment work? The thyroid gland uses iodine-which is in many types of food to make the thyroid hormones. Cats with hyperthyroidism have abnormal and hyperactive thyroid tissue as well as atrophied healthy thyroid tissue. I-131 is a radioactive form of iodine, which the diseased thyroid takes up.
What is cardiac thyrotoxicosis in cats?
Collectively called cardiac thyrotoxicosis. These are late manifestations of hyperthyroidism which highlight the importance of early diagnosis and bi-annual health checks in cats over the age of 7. High blood pressure (hypertension) is another common side effect of hyperthyroidism in cats.
What is the I-131 in cats?
I-131 is a radioactive form of iodine, which the diseased thyroid takes up . Penetration is only 1-2 mm deep, which spares the underlying healthy thyroid cells. Your veterinarian will refer your cat to a specialist veterinary centre for treatment.
How to treat hyperthyroidism in cats?
There are several treatment options for cats with hyperthyroidism which include: Prescription diet. Hills y/d is low in iodine, which is required by the thyroid gland to produce its hormones, low iodene=reduced hormone production. It can take a few weeks for this food to take effect. Medications.
What is radio iodine for cats?
What is radio-iodine? Radio-iodine is the gold-standard treatment for feline hyperthyroidism, almost always curing the condition – and at no risk to your cat. Radio-iodine is the radioactive isotope Iodine-131. It destroys thyroid tumours, thereby curing hyperthyroidism.
Can thyroid cancer be treated with radioiodine?
Since any thyroid tumour acts as a ‘magnet’ for radio-iodine, the treatment will also tackle any tumours in the chest (which are notoriously more difficult to identify and treat) as well as the more common tumours in the throat.
Does radio iodine kill thyroid cancer?
Radio-iodine is absorbed very quickly into the bloodstream and then gets taken up by thyroid tumour tissue – and no other kind of tissue, including healthy thyroid tissue. It becomes concentrated in the tumour, and the beta-radiation it emits kills the tumour.
What are the complications of radioiodine therapy?
These complications include cerebrovascular events (i.e., strokes) and the premature exacerbation of pre-existing kidney disease. Luckily these risks will diminish in time following successful radioiodine therapy and a return to a persistently normal thyroid level.
What is the risk of radioiodine?
1.) Risk to the patient: The radioiodine (I -131) used to treat thyroid disease in people and animals emits both gamma rays and beta particles. The beta particles, which are much more potent forms of radiation, travel an average distance of less than 1 mm. Because of the short distances they travel they never exit the patient ...
How long does it take for a cat to show signs of hyperthyroidism?
Cats may also continue to show signs of hyperthyroidism, including vomiting and diarrhea, for 3-4 weeks after the radioiodine therapy as the disease continues to resolve. The risk to these cats is the simple fact that many cats in the age range when cats develop hyperthyroidism (8+ years) also develop other diseases.
Why do cats never exit the patient?
Because of the short distances they travel they never exit the patient and as a result no one other than the patient is at risk from exposure to the beta particles unless they internalized the radioiodine excreted by the patient. In cats > 95% of the radioiodine is excreted in the urine.
Can you put radioactive iodine in your cat's urine?
The good news is that virtually every client will already take steps to avoid this, even when radioactive iodine in their cat's urine is not the motivation.
Does iodine help cats with thyroid disease?
When it comes to survival, the studies that have been done show that cats cured of their thyroid disease by radioactive iodine live much longer (up to twice as long) when compared to hyperthy roid cats treated by methimazole. So in this case the targeted radiation exposure is actually increasing survival for these patients.
Does radioactive iodine cause thyroid cancer?
Hence for a transient period following radioiodine therapy, the patient's urine contains excreted radioiodine which will emit beta particles as it continues to decay. The risks associated with low level ingestion of radioactive iodine relate to an increased risk of developing thyroid cancer.
How old is a cat with hyperthyroidism?
Hyperthyroidism is a disease of older cats (average age is 12-14 yrs old) caused by excessive secretion of thyroid hormone by abnormal thyroid cells located in a (usually) benign nodule or growth in one or both thyroid glands. Thyroid glands are located in the neck.
What are the different types of thyroids in cats?
The most common finding is two nodules, often one larger than the other, on either side of the trachea i.e. a left thyroid no dule and a right thyroid nodule. In a smaller number of cases, a single (unilateral) large thyroid nodule is palpable. In still other cats, there are several small thyroid nodules, of different sizes, palpable in the ventral cervical area. Cats with thyroid carcinomas usually have a single large firm thyroid nodule. Finally, some cats have cystic thyroids or parathyroids, which can become considerable in size
Can cats take 131I?
There is really no argument that 131I therapy is the treatment of choice for cats with hyperthyroidism, and if all had the facilities, we wouldn’t use anything else 90% of the time! The treatment involves the administration of a small dose of a radiopharmaceutical, which is taken up selectively by the overactive thyroid tissue, and subsequently emits a high-energy α-particle which destroys this tissue. The 131I can be given as a capsule or as an injection (IV or SCI). Both methods work equally well, although oral dosing is less stressful. Cats should be fasted for at least 6 hours before being given a radioactive iodine capsule, and a small amount of water should be dribbled into the cat’s mouth immediately after dosing to ensure that the capsule passes through the oesophagus and into the stomach rapidly, from where it is absorbed in a matter of minutes. Usually injections are reserved for fractious cats in which administration of a capsule may be problematic.
Can cats have thyrotoxic cardiomyopathy?
It is only when owners forgo regular veterinary attention that cats are thyrotoxic for sufficiently long to develop overt CHF.
Can cats have thyroid nodules?
A cryptic problem for experienced clinicians is the detection of thyroid nodules in an asymptomatic cat. Gary Norsworthy and colleagues demonstrated that many elderly cats with normal thyroid status have a goitre, and certainly this is also my experience. Most of these cats have early thyroid hyperplasia, and in the fullness of time will develop symptomatic hyperthyroidism, if they live sufficiently long. If you are a good thyroid palpator, you will pick these cats 2-3 years before they develop clinical signs of hyperthyroidism. To make matters even more complex, a small proportion of these cervical masses are actually parathyroid in origin, and these too may eventually evolve into functional parathyroid tumours. By performing a T4 determination and serum biochemical panel (which typically includes a whole calcium concentration), you are doing a good job in screening for EARLY hyperthyroidism and EARLY hyperparathyroidism. In cases where the total calcium is elevated, ionised calcium and PTH determinations are indicated to further pursue the diagnosis of primary hyperparathyroidism. These latter two assays are difficult to arrange, and your clinical pathology laboratory should be consulted re sample collection and handling.
Why is radioiodine not concentrated in thyroid tissue?
Therefore, the radioiodine is concentrated by the hyperactive, abnormal thyroid tissue. Because the normal thyroid tissue becomes atrophied (decreased in size and ability to function) in the hyperthyroid patient , the normal thyroid tissue itself should not concentrate the radioiodine.
Where to administer radioactive iodine?
The protocol for administering radioactive iodine at the University of Minnesota Veterinary Medical Center is by the subcutaneous route (under the skin). The radioactive iodine is administered as a single injection under the skin in the region of the inner thigh. Because of the nature of the injection, we generally will administer a small amount ...
Why do cats stay in the hospital longer with kidney disease?
Due to the removal of iodine through the kidneys, cats with preexisting kidney disease may have to stay longer because the radioiodine may not be removed from the body as quickly. The patient will be monitored at regular intervals to determine when they are able to be released.
What is the most common hormonal disease in cats?
Hyperthyroidism may be the single most commonly diagnosed hormonal disease in cats next to diabetes. It is generally a disease of older cats with an average age around 9-10+ years, but can be seen in cats as young as 5 years of age. In most cases, the disease is caused by a growth of abnormal, non-cancerous cells which secrete thyroid hormones in ...
How do you know if your cat has hyperthyroidism?
If left untreated, a hyperthyroid cat can exhibit many, if not all, of the following signs: extreme weight loss, excessive appetite in most cases, but decreased appetite in some, muscle weakness, heart disease (in crease in the size of the heart, increased rate, changes in heart rhythm, cardiac arrest), intolerance to stress, and eventually death.
Can you bring in a blanket for a cat?
It is possible for owners to bring in something familiar from home for their cats (i.e.: blanket, shirt, etc. with their scent on it), with the understanding that it will not be returned after the stay because of radiation safety considerations.
Can cats have low thyroid?
In most patients, the atrophied (decreased in size and functional ability) thyroid tissue becomes functional, and the patient’s thyroid level returns to a more normal level. Cats that continue to have low thyroid levels may require thyroid supplementation.
How long did Emmi stay in Ocean State Vet?
Our Cat Emmi was 14 when she went to Ocean State Vet for this treatment...they kept her there for 6 days (that was the hardest part for me) and she was considered low radiation after her quarantine time. All we had to do was use gloves when dealing with the litter box for a couple of days I think...they tell you the post plan care and what to do. And try not to hold them on your lap for a couple of days. That was it.
Is 131 iodine a cure?
The iodine 131 treatment is a CURE. it is along the lines of 96% effective. I did consult radiocat about the chances of it being ineffective and their rules are if it doesn't work they will redo the procedure for half price. Other places will re-do it for free.
