G6PD and G6PD deficiency: G6PD activity for G6PD deficiency, which in HeFei had AUC (CI 95%) of 0.999, with the optimal cut-off value of 26.55 U/dl (sensitivity, SS: 10.00%; and specificity, SP: 98.92%), in FuYang, having the AUC (CI 95%) of 1.000 with the optimal cut-off value of 6.35 U/dL (SS:100.00%; SP: 99.99%), and in AnQing, had the AUC (CI 95%) of 0.999 with the optimal cut-off value of 7.15 U/dL (SS:100.00%; SP: 99.87%).