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Doctor insights on: Radioactive Iodine Uptake Side Effects

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What is the definition or description of: radioactive iodine uptake?

What is the definition or description of: radioactive iodine uptake?

Uptake by thyroid: It is a number to rate how your thyroid gland incorporates iodine relative to a dose to help determine if your thyroid gland is functioning properly, compared to know normal uptakes for the nuclear medicine facility. ...Read more

Radioactive (Definition)

Radioactivity refers to the particles which are emitted from nuclei as a result of nuclear instability. Because the nucleus experiences the intense conflict between the two strongest forces in nature, it should not be surprising that there are many nuclear isotopes which are unstable and emit some kind of radiation. The most common types of radiation are called alpha, ...Read more


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Going in for a radioactive iodine uptake scan. How is this administered?

Going in for a radioactive iodine uptake scan. How is this administered?

Usually capsule: Usually liquid in capsule and is ingested by patient with liquid drink. Sometimes some patients can not swallow pills and can be administered in these rare cases, if facility is informed in advance, in liquid form. ...Read more

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Radioactive iodine uptake test - can I still travel afterwards or would I have to hide out for a few days?

Radioactive iodine uptake test - can I still travel afterwards or would I have to hide out for a few days?

No need to hide.: Once you are released by your doctor you are no longer a hazard, but you may set off radiation detectors at a port. This could be very difficult in a foreign country. Best to carry a brief letter noting your recent treatment. ...Read more

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How will a radioactive iodine uptake test diagnose goiter?

How will a radioactive iodine uptake test diagnose goiter?

It will not: An i131 test does not "diagnose" goiter. Goiter is just a term meaning an enlarged and/or nodular thyroid. An i131 scan is a "fucntional" scan. It is used to determine if a nodule within the thyroid is "hot" - picks up a lot of iodine: hyper-metabolic. A "cold" nodule does not concentrate the iodine: hypometabolic. There is a lower risk of thyroid cancer in "hot" nodules. ...Read more

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Is a radioactive iodine uptake test needed to rule out thyroid cancer?

Is a radioactive iodine uptake test needed to rule out thyroid cancer?

No: Radioactive iodine test is of little or no value in the evaluation for thyroid cancer. Ultrasound and biopsy are much more important. ...Read more

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Radioactive iodine uptake scan, should I go to work after? Am a food service clerk. How long should I stay away from pregnant daughter and toddler.

Radioactive iodine uptake scan, should I go to work after? Am a food service clerk. How long should I stay away from pregnant daughter and toddler.

Only scan and uptake: Hi. If all you had was scan and uptakes, you don't have to stay away from anyone or anything. The isotope used for scan and uptakes is 123-I, and is completely harmless to your thyroid (or anyone else's). If you were treated with 131-I after the scan and uptakes, that isotope is harmful to the thyroid, but doesn't come out of your skin! You can work and be around others. It comes out in your urine ...Read more

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Will the radioactive iodine capsule work for my thyroid uptake scan?

YES: An uptake value will be established.
Uptake can be low, normal, or high.
Scan will be diagnostic if enough iodine localizes in the thyroid gland.

Large amounts of stable iodine from iodized salt and ocean seafood can compete with radiodine and decrease uptake. ...Read more

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I had a partial thyroidectomy and the radioactive iodine treatment for the other side due to goiter-nodule with small cancer. Synthroid (thyroxine) reduced-why?

I had a partial thyroidectomy and the radioactive iodine treatment for the other side due to goiter-nodule with small cancer. Synthroid (thyroxine) reduced-why?

For RAI to Work: The overall treatment is a little confusing as cancer is usually surgically removed, but there are a few reasons to lower your Synthroid (thyroxine). It may be held for a while so your left over thyroid tries to work and will suck up the RAI. The other reason is when the thyroid cells die they will release thyroid hormone. This could temp make you hyperthyroid. Eventually your dose will be adjusted again. ...Read more

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Right side lombectomy of Thyroid removed to Follicular Cancer that's not spread. The Consultant says I have to make my own choice on the 2 treatments. I could have Radioactive Iodine or see consultant every 2 months with yearly Scan. Oncologist Ideas?

Right side lombectomy of Thyroid removed to Follicular Cancer that's not spread. The Consultant says I have to make my own choice on the 2 treatments. I could have Radioactive Iodine or see consultant every 2 months with yearly Scan. Oncologist Ideas?

Seek a second opinio: A second opinion from a Thyroid specialist (endocrinologist) will help and guide you better. I personally do not favor radioactive iodine unless the tumor was advanced or spread outside of the Thyroid gland which it does not appear to be. Check ups at 6 monthly intervals should be sufficient. ...Read more

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I am wandering if me now having hypothyoridism and on top of that thinking about it all day has effects on how I function. I had radioactive iodine surgery because my thyroid was overactive, it has been about a year from then and right now I take 100 mg s

I am wandering if me now having hypothyoridism and on top of that thinking about it all day has effects on how I function. I had radioactive iodine surgery because my thyroid was overactive, it has been about a year from then and right now I take 100 mg s

Hello.: Hello. Clearly this is very troubling for you. I recommend that you get a comprehensive psychiatric evaluation. That would include a metabolic work up. It sounds like you are having obsessive thoughts that your find upsetting. From what you describe you have had a marked change in your personality. Your quality of life can improve, but the cause of your symptoms needs to be evaluated. It is likely that you would benefit from psychotropic medication as well as cognitive behavioral therapy with a therapist. ...Read more

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Is it safe to be near a person who has had radioactive iodine for?

Yes: As long as you're at normal conversational distances, there's really almost no risk. There is a risk, however, to a small child or infant that is held close to your neck for an extended period of time. The radioactivity level drops down quickly in usually about 2 days. ...Read more

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What do I need to know about radioactive iodine treatment in australia?

The same as in USA: Rai can be used to treat hyperthyroidism and thyroid cancer. Are you contemplating emigrating to australia? Talk to an american nuclear technologist first to find out if he/she knows someone in the society of nuclear medicine in australia. ...Read more

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I am having radioactive iodine 131 treatment in two weeks, do you have any tips for me?

Radioactive iodine: Eat low I foods and avoid high I products (kelp, certain vitamins, certain cold/cough remedies). Is this for hyperthryroidism or cancer? If for hyperthyroidism, you need to wait 3-4 days, and then you can resume your (other) treatments, eg methimazole. But discuss this with your doctor. It may take 3-4 months for the rai to ablate the thyroid. Watch for symptoms of hypo. ...Read more

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Does radioactive iodine destroy the entire thyroid? If so, why?

Does radioactive iodine destroy the entire thyroid? If so, why?

RAI...: Radioactive iodine is used for many conditions such as graves disease, thyroid cancer, and hyperfunctioning/autonomous nodules. In each case, a particular dose of radioactive iodine is used to achieve the desired result. Each case is individual and will decide how much of the gland needs to be damaged. ...Read more

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What can I expect after getting radioactive iodine on my thyroid?

Improvement: Radiation treatment is designed to render non-functional the hormone producing cells of the thyroid in cases of overactivity. You can expect to have an improvement in your symptoms and a feeling of well being. You probably will need to supplement your body with thyroid hormone to replace the loss from these cells that no longer work. ...Read more

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Why do you get with radioactive iodine for hyperthyroidism?

Radiation cures!: A hyperactive thyroid will absorb injected radioactive iodine. This iodine will kill the overactive thyroid cells and stop excess production of thyroid hormone. After treatment you will likely require some degree of thyroid hormone replacement to compensate for the loss of thyroid tissue. ...Read more

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What are the risks of radioactive iodine after total thyroidectomy for cancer?

See list: -metallic taste in your mouth.
-dry mouth.
-sore throat.
-neck pain. Radioactive iodine treatment can make your neck swell up or hurt.
-nausea or vomiting, which is usually mild.
-constipation or diarrhea.
-fatigue. ...Read more

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Are there any natural alternatives to having radioactive iodine treatment for grave's disease?

No: Graves' is a treatable but potentially serious disease. There is no natural alternative to treat this. ...Read more

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I'm allergic to radioactive iodine. I was wondering if other thyroid meds have the iodine in them as well?

Are you sure?: Are you allergic to iodide in contrast material? Allergy to the small amount of I in rai is extremely rare.
Thyroid hormones all have i.
You need to discuss this with your doctor or see a thyroidologist. ...Read more

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Can an underactive thyriod become overactive after being burnt out with radioactive iodine 12 years earlier?

Can an underactive thyriod become overactive after being burnt out with radioactive iodine 12 years earlier?

Yes, but uncommon: Some patients with graves' disease, and others with overactive thyroid nodules will undergo radioactive i-131 therapy to control thyroid levels. Usually, the thyroid hormone levels go low as the near-entire thyroid gland is destroyed. In a minority of cases, the underlying autoimmune stimulation of graves' will cause a small remnant to slowly grow back, and eventually cause overactivity again. ...Read more

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I have had a full thyroid taken out july 6 2012 how long is normal time to have radioactive iodine trearmnet done?

I have had a full thyroid taken out july 6 2012 how long is normal time to have radioactive iodine trearmnet done?

2-6 months: I am assuming you are dealing with thyroid cancer. We usually wait until surgery has healed completely ~ 6-8 weeks and up to 6 months generally. It can always be given later as well. ...Read more

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Had 100micu of radioactive iodine 2 days ago. Radiation level first day was 15 and now its 6. When is it safe to be around my 2/6 year olds?

Had 100micu of radioactive iodine 2 days ago. Radiation level first day was 15 and now its 6. When is it safe to be around my 2/6 year olds?

Radioactive iodine: The treatment facility should have given you detailed instructions on this. Ask them, or look through the material they gave you. A guide to exposure can be found at http://www. Thyroid. Org/radioactive-iodine/.
There are certain things you can do in several days with your kids, but other things that involve more close contact (eg sleeping in the same bed) need more time. ...Read more

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Is radioactive iodine safe if I have multiple health issues?

Generally yes: If you're referring to radioactive iodine for treatment of hyperthyroidism, it's probably the safest treatment. Not associated with birth defects, cancer, leukemia etc. Much safer than not treating the hyperthyroidism, particularly if you have "health issues". There are also oral anti-thyroid pills. Surgery has potential risks and should be avoided except in special cases. ...Read more

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What are symptoms of getting radioactive iodine from a patient?

Radio active: Wrong question. You need to work hard to avoid that happening. If possible don't share a bathroom or toilet for a week after getting the radioactive iodine. If not feasible one of you must wait an hour or longer before sharing toilet facilities. ...Read more

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Radioactive iodine versus partial thyroidectomy, explain please?

Need more info: Radioactive iodine is often used for graves' disease which is a hyperactive thyroid condition. I am assuming you were given this option or partial thyroid removal to control the problem. The radioactive therapy is usually preferred but sometimes surgery is better depending on many issues. You need to discuss with endocrinologist and surgeon. ...Read more

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What can I expect after radioactive iodine therapy?

Radioactive iodine: Your thyroid levels will likely be low and you will be prescribed thyroid medication. ...Read more

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What to if I am having radioactive iodine 131 treatment in two weeks, does anyone have any tips for me?

Follow instruction: Just follow the instructions from your doctor, and from the nuclear medicine docs. You may have been given written instructions. Read them. Avoid dietary iodine. Follow instructions on medications, esp thyroid-related drugs (methimazole, levothyroxine, etc). If this is for graves disease, you may want to take/resume a b-blocker after the treatment since T4 and T3 (liothyronine) may increase transiently. ...Read more

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Will radioactive iodine treatment hurt my child in the long run?

Will radioactive iodine treatment hurt my child in the long run?

Simple answer is no: Although long term data is lacking, the current guidelines recommend rai as first choice for treatment of hyperthyroidism/Grave's (in the US) if child's age is above 7yrs of age. Medication and surgery are other options and each choice has it's pros and cons. I personally tend to opt for pharmacologic treatment if presentation is mild. Talk with your endocrinologist. ...Read more

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Should I consider radioactive iodine therapy for regrowth of tissue after -partial, then total thyroidectomy?

Should I consider radioactive iodine therapy for regrowth of tissue after -partial, then total thyroidectomy?

It depends: That would depend on the original diagnosis and reason for thyroidectomy. If it was for benign modular disease or goiter then it shouldn't be necessary. If it was treatment of cancer then it is probably advisable but there are other factors that would need to be explored with your doctor. ...Read more

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Advice about radioactive iodine for a overactive thyroid?

Used as treatment: Your thyroid gland uses iodine to produce thyroid hormone. If you have an over-active thyroid gland, one option is to remove/destroy part of the gland. If radioacive iodine is given, the gland will take it up and will be damaged by the radiation, thus reducing the amount of hormone produced. After this occurs, some patients then have too little thyroid and need to take thyroid pills. ...Read more

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What kind of doctor performs "radioactive iodine ablation"?

Nucl Medicine/Endo: The licensing requirements are such that this procedures is only done by nuclear medicine physicians, and often only in larger medical centers. The endocrinologist, however, should be the one working up the condition and preparing the patient for the procedure. ...Read more

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Can you tell me about an radioactive iodine for a overactive thyroid?

Thryoid treatment: Your thyroid gland uses iodine to produce thyroid hormone. If you have an over-active thyroid gland, one option is to remove/destroy part of the gland. If radioacive iodine is given, the gland will take it up and will be damaged by the radiation, thus reducing the amount of hormone produced. After this occurs, some patients then have too little thyroid and need to take thyroid pills. ...Read more

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Can you tell me about having an radioactive iodine for a overactive thyroid?

Thyroid treatment: Your thyroid gland uses iodine to produce thyroid hormone. If you have an over-active thyroid gland, one option is to remove/destroy part of the gland. If radioacive iodine is given, the gland will take it up and will be damaged by the radiation, thus reducing the amount of hormone produced. After this occurs, some patients then have too little thyroid and need to take thyroid pills. ...Read more

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Do you have to do a low iodine diet prior to radioactive iodine treatment for thyroud cancer and if so for how long?

Do you have to do a low iodine diet prior to radioactive iodine treatment for thyroud cancer and if so for how long?

Yes.: One has to starve the thyroid gland of iodine; it's the one tissue in the body which takes it up, so one wants to maximize iodide uptake when treating thyroid cancer with radioactive iodine. The major source of iodine in the diet is iodized salt. Avoid eating out for 2 weeks prior to radio-active iodine treatment and google "low-iodine diet" for the rules of the diet. ...Read more

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Can you tell me some exercise after radioactive iodine treatment, i-131?

Can you tell me some exercise after radioactive iodine treatment, i-131?

RAI: Hi. Was the 131-I for hyperthyroidism or for thyroid cancer? Once your hypothyroidism is treated and you stably have normal thyroid function (or slightly hyper if thyroid cancer), you're good to get back to your pre-illness workout routine. Be patient...you've been thru a lot. But go for it. You'll get back in your groove. To your health! ...Read more

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After radioactive iodine 131 treatment how long should you wait to have small children back in your care if you recover at home not hospitalized?

To treat what?: If hyperthyroidism ok in one day - but not to have them in your lap. If for thyroid cancer wait a few days - the nuclear facility will want to do a post rai scan in about 3 days - so ask them based on any uptake when it would be safe. ...Read more

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To ablate remnant tissue after complete thyroidectomy (initially had multiple noduls, 1-ca node), what maximum dose of radioactive iodine be taken?

Depends: The dose is related to the risk of recurrent disease. The larger the primary tumor, the higher the risk. In your age group (under 45 yo) the risk is relatively low, even with having a positive lymph node. The recommended dose would be as low as 30 mci or as high as 100. ...Read more

Dr. David Djang
33 Doctors shared insights

Radioactive Iodine Uptake (Definition)

It is a number to rate how your thyroid gland incorporates iodine relative to a dose to help determine if your thyroid gland is functioning properly, compared to know normal uptakes for ...Read more