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

Table 1 Thyroid function in relation to plasma levels of TSH and FT4

Thyroid function	TSH (mIU/L)^a	FT4 (pmol/L)^b
Normal thyroid function	0.1–3	10.42–24.32
Isolated hypothyroxinemia	0.1–3	< 10.42
Subclinical hypothyroidism	> 3	10.42–24.32
Clinical hypothyroidism	> 3	< 10.42
Subclinical hyperthyroidism	< 0.1	10.42–24.32
Clinical hyperthyroidism	< 0.1	> 24.32

^aNormal range for TSH (mIU/L) [8]: 0.13–3.93 (T1), 0.26–3.50 (T2), and 0.42–3.85 (T3)
^bNormal range for FT4 (pmol/L) 10.42–24.32 pmol/L referred the value of clinical practice in Peking Union Medical College Hospital

ISSN: 1743-7075