Thyroid iodine uptake test

The thyroid iodine test refers to the selective absorption of iodine by the thyroid gland. Under normal circumstances, the iodine in the thyroid is dozens of times the plasma concentration, which is the "iodine taking effect" of the thyroid gland. Basic Information Specialist Category: Inspection Category: Other Inspections Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: When hypothyroidism and secondary hypothyroidism occur, the results are low. Normal value: 3h: 0.057-0.245 24h: 0.0151-0.471 Above normal: In the case of hyperthyroidism and subacute thyroiditis, the test results are high. negative: Positive: Tips: Forbidden diet before check. Normal value normal. Clinical significance First, the diagnostic indicators of hyperthyroidism 1. The isotope iodine absorption rate is higher than the upper limit of the normal value. 2. The ratio of the isotopic iodine absorption iodine rate to the 24-hour isotope iodine absorption rate of 2.3 hours is greater than 0.8 hours or the ratio of 4 hours to 24 hours is greater than 0.85. 3. The isotope iodine absorption rate peak shift, that is, the highest isotope iodine absorption rate appeared before 24 hours. Anyone who meets 1, 2 or 3 can diagnose hyperthyroidism. Increased isotope iodine absorption rate is sometimes associated with increased isotope iodine uptake in endemic goiter and a few sporadic goiter. Second, the diagnostic indicators of hypothyroidism The iodine absorption rate of each isotope is lower than the lower limit of the normal value. Sometimes it is necessary to distinguish between thyroiditis, ectopic thyroid, iodine-containing drugs, food effects and other isotope iodine absorption rates. High results may be diseases: precautions for endemic cretinism Prohibit diet before checking. Inspection process The examination method is as follows: after oral administration or injection of a small amount of radionuclide-containing iodized salt, the radioactivity intensity is directly measured in the thyroid gland. Not suitable for the crowd No taboos. Adverse reactions and risks Generally no complications.