Objective:To evaluate iodine nutrition status in Chongqing after the program of iodized salt supplementation by appraising and analysing the urinary iodine of healthy subjects and patients with goiter and hyperthyroidism.Methods:423 healthy subjects and 576 patients with goiter and hyperthyroidism were randomly choosed from the clinic of College of Clinical Medicine in Chongqing Medical University and Chongqing University.They were respectively questioned about thyroid disorders

and received necessary physical examination.Their sera were measured for TT 3

TT 4

TSH.The urinary iodine was examined by spectrophotometer.Results:The median value of urinary iodine after iodine supplementation were 247μg/L and 224μg/L in normal subjects and patients respectively

which were higher than those before iodine supplementation

while a slight but insingnificant difference between normal subjects and patients were found ( P >0.01).The value of urinary iodine in 47% of normal subjects and 17% of patients were between 100μg/L and 200μg/L.The value of urinary iodine in 53% of patients were over 200μg/L and 33% of patients were lower than 100μg/L.Conclusion:The iodine deficiency is corrected by the supplementation of iodized salt

however

both higher and lower intake of iodine exist among the patients with goiter and hyperthroidism.