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Radioactive iodine is absorbed and concentrated by the thyroid gland. You get it in liquid or pill form. The radiation will pass out of your body through your urine within days. Until that time, you will give off radiation in your sweat, your saliva, your urine, and anything else that comes out of your body. It is important to avoid exposing other people to the radioactivity from your body.
Your doctor will give you more written instructions. Follow these carefully. The instructions will tell you how far to stay away from people and how long you need to follow precautions. They will list other ways to keep other people safe. They will also tell you when it will be safe to go out, go to work, and do other activities.
Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor or nurse advice line (811 in most provinces and territories) if you are having problems. It's also a good idea to know your test results and keep a list of the medicines you take.
Watch closely for any changes in your health, and be sure to contact your doctor or nurse advice line if:
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Current as of: March 1, 2023
Author: Healthwise Staff
Medical Review:Adam Husney MD - Family Medicine & Kathleen Romito MD - Family Medicine
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