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How can the radioisotope iodine be used to identify and treat an overactive thyroid gland?
3 doctors weighed in

Dr. Melissa Young
Internal Medicine - Endocrinology
2 doctors agree
In brief: Uses thyroidfunction
The thyroid uses iodine to make thyroid hormone.
Most of the iodine you get in food gets concentrated in the thyroid. It can't tell the difference between regular iodine and radioactive iodine. In diagnosis, the patient swallows a capsule of a weak radioisotope and then the amount the thyroid absorbs is measured. For treatment, a stronger isotope is used, and over time it destroys thyroid cells.

In brief: Uses thyroidfunction
The thyroid uses iodine to make thyroid hormone.
Most of the iodine you get in food gets concentrated in the thyroid. It can't tell the difference between regular iodine and radioactive iodine. In diagnosis, the patient swallows a capsule of a weak radioisotope and then the amount the thyroid absorbs is measured. For treatment, a stronger isotope is used, and over time it destroys thyroid cells.
Dr. Melissa Young
Dr. Melissa Young
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