After adjusting for thalassemia and hemoglobinopathies frequently observed in Thailand, the multivariate analysis revealed that the following variables, including G6PD deficiency, G6PD ViangchanG871A, gender, neonatal anemia, ABO incompatibility, and postpartum age, were independently significantly associated with increasing reticulocyte counts (Table 5). This evidence concerns the gene G6PD and G6PD deficiency.