Iodine uptake rate test generally refers to the thyroid uptake of 131 iodine test, the significance of which is to diagnose thyroid disease.
Since iodine is one of the raw materials for thyroid hormone synthesis by the thyroid gland, radioactive iodine 131 can be ingested and participate in the synthesis of thyroid hormones, and the body’s intake of iodine and its rate are closely related to the function of the thyroid gland. Introducing iodine 131 into the body of the examinee, and determining the change in the radioactivity counts of the thyroid gland can help to understand how the iodine 131 is being ingested by the thyroid gland, and determine the function of the thyroid gland.
Iodine 131 uptake by the thyroid gland is determined by stopping the use of iodine-rich foods and medications, such as seafood, iodine preparations, thyroid hormones, and antithyroid medications. The 131 iodine solution, solution or capsule is taken orally on an empty stomach, and another equal amount of 131 iodine is taken and placed into the neck model as a standardized source, and the radioactivity counts of the thyroid site are measured 2 hours, 4 hours and 24 hours after taking the drug, respectively.
If hyperthyroidism is considered, oral antithyroid medication such as methimazole is required; if hypothyroidism is considered, oral levothyroxine sodium is required to supplement thyroxine. All of the above medications carry certain risks and should be taken under the supervision of a specialist.
It is recommended to go to the hospital if the thyroid iodine 131 test result is abnormal.