Correlative retention time peak identification method for glycated haemoglobin in high-performance liquid chromatography.

A convenient peak identification method in stepwise elution was investigated and correlation among the retention times of peaks in ion-exchange chromatography of glycated haemoglobin was assessed. By using a correlation method, accuracy of peak identification among columns with degradation and product deviations can be maintained. The correlative retention time identification procedure is treated theoretically.