Table 3

Observed range of haemoglobin S percentage in individuals with sickle cell trait divided into three groups by inspection of the data, with of without globin chain synthesis data, but without analysis of globin genes

NPostulated genotypeMethodRef
NS, not specified.
Electrophoresis on polyacrylamide gel or cellulose acetate followed by elution 5
NS37–5030–3620–29NS 6
75>3831–38<31Column chromatography 7
56>3831–38<31Column chromatography 8
17135–4528–35<28Cellulose acetate electrophoresis and elution 9