K. PaisooksantivatanaA. KongsomganK. KhupulsupMahidol University2018-09-132018-09-132009-08-01Diabetes Research and Clinical Practice. Vol.85, No.2 (2009)016882272-s2.0-67649850364https://repository.li.mahidol.ac.th/handle/20.500.14594/27165Aim: To evaluate comparability of NGSP-certified method and IFCC-calibrated method. Methods: HbA1c was measured on two analyzers (n = 50). Comparability was tested by Deming regression, bias estimation and Friedman test. Results: A strong correlation and good agreement between two methods was demonstrated. Conclusion: NGSP and IFCC-derived NGSP HbA1c can be used interchangeably. © 2009 Elsevier Ireland Ltd. All rights reserved.Mahidol UniversityBiochemistry, Genetics and Molecular BiologyMedicineArticleSCOPUS10.1016/j.diabres.2009.06.005