RADIOACTIVE IODINE-131 FOR TREATMENT OF HYPERTHYROIDISM OUTPATIENT DISCHARGE INFORMATION INTRODUCTION The thyroid glands are located in the neck of the cat are responsible for producing thyroid hormone. An excess of thyroid hormone production causes hyperthyroidism. The thyroid glands trap Iodine from the blood stream and concentrate it within the gland. When a cat is given … Continue reading Radioiodine Outpatient Information