Thyroid Scan

Radioactive Thyroid Scan, Technetium Scan of the Thyroid

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:	Douglas Dana Jan Nissl, RN, BS	Last Updated: December 1, 2006
Medical Review:	Adam Husney, MD - Family Medicine Caroline S. Rhoads, MD - Internal Medicine David C.W. Lau, MD, PhD, FRCPC - Endocrinology & Metabolism
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