Iodine I-125

**Semantic type:** Element, Ion, or Isotope|Pharmacologic Substance

**Definition:** A radioactive isotope of iodine, a nonmetallic element of the halogen group. With a half-life of 60 days, iodine 125 occurs naturally and can be produced artificially. This agent has both therapeutic and diagnostic uses, particularly in thyroid disease. (NCI04)

**Synonyms:** - 125-Iodine - I-125 - IODINE I-125 - Iodine 125 - Iodine I 125