Table II.

Proposed lower limits of normal for haemoglobin concentration of the blood for white and black adults (Beutler & Waalen, 2006).

Group	Haemoglobin (g/l)
White men (age)
20–59	137
60+	132
White women
20–59	122
60+	122
Black men
20–59	129
60+	127
Black women
20–59	115
60+	115