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Table 3 Thyroid Hormones Values According to Gestational Age in Pregnant Women With High Thyroid Antibody Values

From: Thyroid hormones according to gestational age in pregnant Spanish women

Thyroid Hormone Gestional Age, wka Mean Median 2.5th %ile 97.5th %ile
Thyroid-stimulating hormone (μUI/mL) <11 1.75 ± 3.64 1.25 0.1 13.5
  11 to 20 1.63 ± 1.30 1.44 0.0 -
  21 to 30 1.89 ± 0.96 1.62 0.4 -
  31 to 36 1.72 ± 0.91 1.72 0.2 4.5
  >36 1.19 ± 0.62 1.19 0.7 -
Free triiodothyronine (pg/mL) <11 3.31 ± 0.58 3.36 1.7 4.4
  11 to 20 3.44 ± 0.65 3.59 1.7 -
  21 to 30 3.24 ± 0.51 3.15 2.3 -
  31 to 36 3.22 ± 0.47 3.24 2.4 4.3
  >36 3.02 ± 0.15 3.02 2.9 -
Free thyroxine (ng/dL) <11 1.06 ± 0.15 1.06 0.8 1.4
  11 to 20 1.01 ± 0.15 1.03 0.6 -
  21 to 30 0.89 ± 0.97 0.87 0.7 -
  31 to 36 0.90 ± 0.13 0.86 0.7 1.3
  >36 0.90 ± 0.11 0.90 0.8 -
  1. a <11 weeks (n = 330); 11 to 20 weeks (n = 200); 21 to 30 weeks (n = 208); 31 to 36 weeks (n = 269); >36 weeks (n = 14).