Abstract
We describe a Chinese woman who was assumed to be heterozygous for both Hb E [β26(B8)Glu→Lys] and α0-thalassemia (α0-thal) by a high performance liquid chromatography (HPLC) method, but was later also shown to be a Hb New York [β113(G15)Val→Glu] heterozygote by the Sebia CapillaryS2 system. This study suggested that a single test is never sufficient to allow the correct diagnosis of an abnormal hemoglobin (Hb). We also emphasize the importance of a correct diagnosis of interactions between α- and β-thalassemias.