Table 3.

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

		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