Sodium Iodide I-123

**Semantic type:** Pharmacologic Substance

**Definition:** A radiopharmaceutical containing the radioisotope I-123 with diagnostic property. After absorption, the iodide is distributed through the extracellular fluid of the body and accumulates in the thyroid gland, thereby allowing measurement of thyroid function.

**Synonyms:** - (I-123)Sodium Iodide - SODIUM IODIDE I-123