Radioactive Iodine Uptake Test

Iodine Uptake Test, Radioactive

What Affects the Test

Reasons you may not be able to have the test or why the results may not be helpful include:

• Taking thyroid medicine.
• Eating foods with iodine, such as shellfish, iodized salt or kelp.
• Having other tests using contrast materials in the past 4 weeks.

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Author:	Jan Nissl, RN, BS	Last Updated: September 15, 2006
Medical Review:	Caroline S. Rhoads, MD - Internal Medicine David C.W. Lau, MD, PhD, FRCPC - Endocrinology & Metabolism
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