Observed range of haemoglobin S percentage in individuals with sickle cell trait with four, three, or two α globin genes (the four patients with iron deficiency in our present study were excluded)
| N | αα/αα | −α/αα | −α/−α | Method | Ref |
|---|---|---|---|---|---|
| HPLC, high performance liquid chromatography. | |||||
| 23 | 36–43 | 29–37 | 22–28 | Cellulose acetate electrophoresis | 6 |
| 31 | 32.5–38 | 28–35 | 24–27 | Cellulose acetate electrophoresis and elution | 10 |
| 74 | 31–43 | 29–35 | 22–29 | HPLC | Present study |