2. Materials andmethods
2.1. Blood samples
This study was approved by the Institutional Review Board of the Khon Kaen University Ethics Committee in Human Research, Khon Kaen, Thailand. Leftover EDTA blood samples of newborns fromroutine screening for G-6-PD deficiency using a fluorescence spot test [11], conducted by the Diagnostic Microscopy Unit, Srinagarind Hospital, Faculty ofMedicine, Khon Kaen University,were evaluated for their hematological profiles and reticulocyte counts (percent reticulocytosis)
using an automated hematological analyzer (Sysmex XT200).