What it means
A trace mineral found in iodized salt, seafood and dairy foods. The thyroid needs it to make its hormones, and too little causes goiter and hypothyroidismhy-poh-THY-roy-diz-umA condition in which the thyroid gland makes too little thyroid hormone.hypo- below, underthyr/o thyroid gland-ism conditionFull entry . Iodine solutions such as povidone-iodine are used to clean the skin before procedures. Some X-ray contrastKON-trastA dye or other substance given before an imaging test so body parts show up more clearly.Full entry dyes contain iodine, and radioactive iodine is used to treat an overactive thyroid and some thyroid cancers.
For the nurse
Ask about allergy or past reactions to contrast dye before tests that use it. A seafood allergy does not by itself mean an allergy to iodine contrast. Report a history of contrast reactions to the provider.
At a glance
| Spanish | yodo |
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Related terms
hypothyroidism
A condition in which the thyroid gland makes too little thyroid hormone.
hyperthyroidism
A condition in which the thyroid gland makes too much thyroid hormone.
thyr/o
A word part that means the thyroid gland.
contrast
A dye or other substance given before an imaging test so body parts show up more clearly.