PROBLEM TO BE SOLVED: To provide a more highly sensitive method for screening β-thalassemia capable screening β-thalassemia and children. ;SOLUTION: It is determined whether data to be tested belongs to a group having the characteristics of β-thalassemia or a group of iron deficiency anemia. Then it is determined whether the data determined as belonging to a group having the characteristics of β-thalassemia belongs to β-thalassemia or children. The data is preferably erythrocytic-series data. In addition, the erythrocytic- series data is preferably selected from a group containing the number of erythrocytes, the concentration of hemoglobin, hematocrit values, erythrocyte indices derived from those three items of data, and the distribution width of erythrocytes.;COPYRIGHT: (C)1999,JPO
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