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Table 3 Comparison of interquartile ranges of thyroid hormones between our study and a previous Sudanese report

From: Trimester-specific thyroid hormone reference ranges in Sudanese women

   Trimester I Trimester II Trimester III
Present study TSH, IU/ml 0.6–1.6 0.9–1.7 1.0–1.8
T3, nmol/L 4.4–5.3 3.9–4.7 3.7–4.5
T4, pmol/L 15.1–21.4 12.3–17.8 11.5–16.4
Eltom et al. [19]. TSH, IU/ml 0.5–1.5 0.7–1.8 0.6–1.6
T3, nmol/L 2.1–3.2 2.2–3.5 2.2–2.9
T4, pmol/L 9.6–13.4 8.6–10.8 9.4–12.6