Table 1. Comparative hematological profile.

Mean ? standard deviation
Hematological parameters	Symptomatic Hb D n = 6	Asymptomatic Hb D n = 24
Hb A0	48.6 ? 3.2	51.2 ? 8.9
Hb A2	4.2 ? 1.8	2 .2 ? 1.7
Hb F	2.5 ? 1.3	1.2 ? 0.4
Hb D	42.6 ? 3.5	39.0 ? 10.8
Red blood cells (millions/μl)	3.2 ? 1.7	4.6 ? 1.0
Hemoglobin (g/dl)	8.3 ? 3.0	11.4 ? 3.2
Hematocrit (%)	27.2 ? 2.6	30.8 ? 7.9
Mean corpuscular volume (fl)	72.3 ? 5.4	74.5 ? 11.2
Mean corpuscular hemoglobin (pg)	22.7 ? 2.3	24.9 ? 4.9
Mean corpuscular hemoglobin concentration (g/dl)	25.3 ? 2.4	28.2 ? 3.5
Serum iron (µg/dl)	35.2 ? 3.4	75.6 ? 8.3

Hb = hemoglobin.