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Table 3 The relationship between Tg cut-off values and iodine intake in the study sample

From: Low intake of iodized salt and iodine containing supplements among pregnant women with apparently insufficient iodine status - time to change policy?

 NTg > 13 μg/dTg > 40 μg/d
Iodine intake105  
  ≥ 220 μg/d4356%5%
  < 220 μg/d6274%21%
P value .049.019
Intake of iodine containing supplements
 Yes5560%4%
 No5074%26%
P value 0.120.001
  1. IOM standard for iodine intake (220 μg/d, [30]), includes intake from both food and supplements
  2. Tg Serum thyroglobulin, IOM Institute Of Medicine