Table 2.

Extreme 10th percentile distribution of serum concentrations of iron-related indicators

	Serum concentrations of iron-related indicators
median (IQR)	10th-90th percentile	< 10 th percentile	> 90th percentile
	N = 701	N = 102	N = 90
Iron, mg/L	2.39 (2.05, 2.77)	1.39 (1.25, 1.54)	3.43 (3.29, 3.68)
	N = 733	N = 90	N = 91
sTFR, µg/L	2761 (1921, 3958)	603 (405, 795)	7211 (6567, 8499)
Ferritin, µg/L	90.3 (59.3, 131)	15.5 (8.62, 19.6)	259 (227, 286)
Hepcidin, µg/L	188 (124, 263)	42.3 (29.5, 54.0)	418 (387, 461)
Transferrin, ng/L	657 (446, 1016)	129 (103, 170)	2142 (1870, 2791)

sTFR: Soluble transferrin receptor