Evaluation of Total Bilirubin in a National Quality Program

EQA results demonstrated temporal variability in bias across all analytical principles, manufacturers, and platforms used for neonatal bilirubin assays. Bias was found to vary with bilirubin concentration. Standardization of neonatal bilirubin assays is urgently needed to ensure more reliable and accurate measurements across different systems. Meanwhile, EQA programs are important in monitoring future assay adjustments to ensure appropriate and consistent management of neonatal hyperbilirubinemia.