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Table 6 Serum concentration of TSH, FT4, and Tg in different UIC groups

From: Evaluation of median urinary iodine concentration cut-off for defining iodine deficiency in pregnant women after a long term USI in China

UIC group N FT3 (pmol/L) FT4 (pmol/L) TSH (mIU/L) TG (μg/L) SI (μg/L) UIC(μg/L)
< 100 96(41.0%) 4.01 (2.88–5.03) 13.64 (10.05–18.53) 1.39 (0.06–3.29) 9.97 (8.85) 71.5 (45.25–111.88) 77.91 (32.02–98.97)
100–109 30(12.9%) 4.11 (3.34–7.02) 13.64 (10.18–24.98) 1.34 (0.01–2.63) 8.32 (5.64) 71.5 (49–118) 104.07 (100.68–110.34)
110–149 49(20.9%) 3.99 (3.21–5.07) 12.86 (9.35–16.67) 1.33 (0.14–3.59) 9.59 (8.80) 68 (44–101.75) 123 (111–149.24)
150–249 47(20.1%) 4.00 (3.21–5.25) 13.06 (9.08–17.60) 1.48 (0.12–2.93) 8.12 (9.91) 70 (39.8–105.8) 175.71 (150.05–237.39)
250–499 12(5.1%) 3.95 (3.29–9.87) 12.55 (11.04–22.14) 1.55 (0.01–2.88) 7.73 (3.85)* 78 (63–123)* 304.29 (259.00–471)
  1. *P values represent the median level of this group compared with the 150–249 group