routine laboratory investigations of hemoglobinopathies include hb electrophoresis for abnormal hemoglobins , determination of hb a2 ( alpha 2 delta 2 ) for beta-thalassemia traits , staining for hb h ( beta 4 ) inclusions for alpha-thalassemia traits and estimation of hb f ( alpha 2 lambda 2 ) for the presence of hereditary persistence of fetal hemoglobin genes ( hpfh ) .
C0019046
hb
C0019047
abnormal hemoglobins