The thyroid is by far the largest consumer of iodine. It stores iodine in thyroglobulin, which is the precursor to thyroid hormone. I don't know the numbers, bu

The thyroid is by far the largest consumer of iodine. It stores iodine in thyroglobulin, which is the precursor to thyroid hormone. I don't know the numbers, but I wouldn't be surprised if the thyroid released more iodine by breaking down thyroglobulin than breaking down thyroid hormone.