6 doctors weighed in:
What do I have to do before my thyroid scan?
6 doctors weighed in

Dr. Guido Davidzon
Nuclear Medicine
1 doctor agrees
In brief: If hyperthyroidism
If you are having a diagnostic dose of i-123 (usually 200 microci), you should stop taking anti-thyroid medications (methimazole and ptu) and make sure you didn't have iodine-based IV contrast (used in ct scans) in the prior 6-8 weeks.
For a diagnostic study a low-iodine diet is not require, unless you are going to received i-131 treatment shortly after the test.

In brief: If hyperthyroidism
If you are having a diagnostic dose of i-123 (usually 200 microci), you should stop taking anti-thyroid medications (methimazole and ptu) and make sure you didn't have iodine-based IV contrast (used in ct scans) in the prior 6-8 weeks.
For a diagnostic study a low-iodine diet is not require, unless you are going to received i-131 treatment shortly after the test.
Dr. Guido Davidzon
Dr. Guido Davidzon
Thank
Dr. Quang Nguyen
Internal Medicine - Endocrinology
1 doctor agrees
In brief: Prep 4 thyroid scan
It's depends on why the scan is done but here is a good link on what you need to know: http://www.
Webmd.Com/a-to-z-guides/thyroid-scan.

In brief: Prep 4 thyroid scan
It's depends on why the scan is done but here is a good link on what you need to know: http://www.
Webmd.Com/a-to-z-guides/thyroid-scan.
Dr. Quang Nguyen
Dr. Quang Nguyen
Thank
Dr. Gerald Mandell
Nuclear Medicine
In brief: Supply information
Let them know had CT scan, surgeries or treatments using iodinated contrast material within the last two months, taking medications or ingesting other substances that contain iodine, including kelp, seaweed, cough syrups, multivitamins,heart medications.
any allergies to iodine, medications and anesthetics.pregnant or breastfeeding.Isotope used either Iodine 123 ingested or Technetium 99m IV.

In brief: Supply information
Let them know had CT scan, surgeries or treatments using iodinated contrast material within the last two months, taking medications or ingesting other substances that contain iodine, including kelp, seaweed, cough syrups, multivitamins,heart medications.
any allergies to iodine, medications and anesthetics.pregnant or breastfeeding.Isotope used either Iodine 123 ingested or Technetium 99m IV.
Dr. Gerald Mandell
Dr. Gerald Mandell
Thank
Dr. Robert Carroll
Nuclear Medicine
In brief: Avoid iodized salt,
Anything containing iodine competes for uptake into the thyroid.
Sushi bar seaweed or iodized salt decrease isotope in the thyroid.

In brief: Avoid iodized salt,
Anything containing iodine competes for uptake into the thyroid.
Sushi bar seaweed or iodized salt decrease isotope in the thyroid.
Dr. Robert Carroll
Dr. Robert Carroll
Thank
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