Urinary iodine excretion from the 125i-ria laboratory personnel in inep

The aim of this study was to examine urinary iodine excretion from the 125I-RIA-INEP laboratory personnel. Radiodosimetric measurements have shown that people received ionization energy doses that were significantly bellow the permissible levels, i.e. 0.15 - 0.45 mSv. The amount of iodide in urine varied from 123 to 396 mg/L (1.0 - 3.2 mmol/L) and the mean value was 264 mg/L (2.1 mmol/L; n = 25, SD = 75.3 mg/L or 0.60 mmol/L, CV = 28.5 %). On the basis of the obtained data it can be concluded that professionaly exposed individuals in the examined laboratory consume sufficient amount of dietary iodine, thus minimizing a risk of internal accumulation of 125I.