Nelson J C, Renschler A, Dowswell J W
Calif Med. 1970 Jun;112(6):11-4.
The range of values for the 24-hour thyroidal accumulation of radioactive iodine in euthyroid persons varies with geographic location. In the San Bernardino Valley region of Southern California the "normal range" is 6 percent to 33 percent in euthyroid subjects. This is lower than in studies from other areas of the United States. The urinary iodide excretion and the absolute iodine uptake of the thyroid are higher than in studies from many other areas of the United States, pointing to iodine abundance as the reason for this difference. The geographic variation and the possibility of changing dietary iodine intake of normal persons point to the necessity of current and local determinations of the "normal range" of the thyroidal uptake of radioiodine if the results of this thyroid function test are to be properly interpreted.
甲状腺功能正常者24小时放射性碘甲状腺摄取量的数值范围因地理位置而异。在南加利福尼亚州的圣贝纳迪诺山谷地区，甲状腺功能正常者的“正常范围”是6%至33%。这一范围低于美国其他地区的研究结果。该地区正常人的尿碘排泄量和甲状腺对碘的绝对摄取量高于美国其他许多地区的研究结果，这表明碘含量丰富是造成这种差异的原因。地理差异以及正常人饮食中碘摄入量可能发生变化，这表明如果要正确解读这项甲状腺功能测试的结果，就有必要针对当前和当地情况确定放射性碘甲状腺摄取量的“正常范围”。
