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  1. Evaluation of four cation exchange HPLC instruments for the determination of hemoglobin A 1c : the devil is in the detail

    Article • Clinical Chemistry and Laboratory Medicine (CCLM), May 2026, De Gruyter

    Erna Lenters-Westra

  2. Confirmation of the value of the labile HbA1c/HbA1c-ratio in the presence of a Hb J-Baltimore variant: a clinical case

    Article • Clinical Chemistry and Laboratory Medicine (CCLM), September 2025, De Gruyter

    Erna Lenters-Westra

  3. Managing discordance between HbA1c and glucose management indicator

    Article • Diabetic Medicine, March 2025, Wiley

    Erna Lenters-Westra

  4. Limitations of glycated albumin standardization when applied to the assessment of diabetes patients

    Article • Clinical Chemistry and Laboratory Medicine (CCLM), June 2024, De Gruyter

    Erna Lenters-Westra

  5. Innovations in HbA1c analysis: finding the balance between speed and accuracy. An investigation of a potential new Secondary Reference Measurement Procedure for the IFCC

    Article • Clinical Chemistry and Laboratory Medicine (CCLM), October 2023, De Gruyter

    Erna Lenters-Westra

  6. The never ending story of Hb-variants interferences on the measurement of HbA1c

    Article • Clinica Chimica Acta, July 2022, Elsevier

    Erna Lenters-Westra

  7. Are hemoglobin A1c point-of-care analyzers fit for purpose? The story continues

    Article • Clinical Chemistry and Laboratory Medicine (CCLM), November 2020, De Gruyter

    Erna Lenters-Westra

  8. Foutief gerapporteerde HbA1c-uitslagen als gevolg van een zeldzame Hb-variant: Tosoh G8 versus Sebia Capillarys 3 Tera

    Article • Laboratoriumgeneeskunde, September 2020, BPM Medica

    Erna Lenters-Westra

  9. An Unexpected Low HbA1c: Measurement Error or Interpretation Problem?

    Article • Clinical Chemistry, July 2019, AACC

    Erna Lenters-Westra

  10. Should HbA1c POCT be accepted for diagnosis of type 2 diabetes?

    Article • Clinica Chimica Acta, June 2019, Elsevier

    Erna Lenters-Westra

  11. Analysis: Investigating the quality of POCT devices for HbA1c, what are our next steps?

    Article • Journal of Diabetes Science and Technology, May 2019, SAGE Publications

    Erna Lenters-Westra

  12. Software updates of Tosoh HPLC analyzers can cause and resolve interference of Hb-variants for HbA1c

    Article • Clinica Chimica Acta, October 2018, Elsevier

    Erna Lenters-Westra

  13. HbA1c method performance: The great success story of global standardization

    Article • Critical Reviews in Clinical Laboratory Sciences, July 2018, Taylor & Francis

    Erna Lenters-Westra

  14. Independent evaluation using fresh patient samples under real clinical conditions is vital for confirming the suitability and marketability of any new HbA1c assay. An example

    Article • Clinical Chemistry and Laboratory Medicine (CCLM), June 2018, De Gruyter

    Erna Lenters-Westra

  15. Evaluation of Four HbA1c Point-of-Care Devices Using International Quality Targets: Are They Fit for the Purpose?

    Article • Journal of Diabetes Science and Technology, June 2018, SAGE Publications

    Erna Lenters-Westra

  16. Understanding the Use of Sigma Metrics in Hemoglobin A1c Analysis

    Article • Clinics in Laboratory Medicine, March 2017, Elsevier

    Erna Lenters-Westra

  17. Whole Blood Donation Affects the Interpretation of Hemoglobin A1c

    Article • PLOS One, January 2017, PLOS

    Erna Lenters-Westra

  18. Evaluating new HbA1c methods for adoption by the IFCC and NGSP reference networks using international quality targets

    Article • Clinical Chemistry and Laboratory Medicine (CCLM), January 2017, De Gruyter

    Erna Lenters-Westra

  19. Common Hb-variants show no longer interference on the Tosoh G8 after an update of the software

    Article • Clinica Chimica Acta, December 2016, Elsevier

    Erna Lenters-Westra

  20. Can the Afinion HbA1c Point-of-Care instrument be an alternative method for the Tosoh G8 in the case of Hb-Tacoma?

    Article • Scandinavian Journal of Clinical and Laboratory Investigation, May 2016, Taylor & Francis

    Erna Lenters-Westra

  21. Investigation of 2 Models to Set and Evaluate Quality Targets for Hb A1c: Biological Variation and Sigma-Metrics

    Article • Clinical Chemistry, March 2015, AACC

    William John, Erna Lenters-Westra, David Sacks

  22. Multicentre evaluation of the Premier Hb9210 HbA1c analyser

    Article • Clinical Chemistry and Laboratory Medicine (CCLM), January 2015, De Gruyter

    Erna Lenters-Westra

  23. Biological Variation of Hemoglobin A1c: Consequences for Diagnosing Diabetes Mellitus

    Article • Clinical Chemistry, December 2014, Oxford University Press (OUP)

    Erna Lenters-Westra

  24. Three of 7 Hemoglobin A1c Point-of-Care Instruments Do Not Meet Generally Accepted Analytical Performance Criteria

    Article • Clinical Chemistry, August 2014, Oxford University Press (OUP)

    Erna Lenters-Westra

  25. Haemoglobin A1c: Historical overview and current concepts

    Article • Diabetes Research and Clinical Practice, February 2013, Elsevier

    Erna Lenters-Westra

  26. Point-of-Care Assays for Hemoglobin A1c: Is Performance Adequate?

    Article • Clinical Chemistry, September 2011, Oxford University Press (OUP)

    Erna Lenters-Westra

  27. In Reply

    Article • Clinical Chemistry, August 2010, Oxford University Press (OUP)

    Erna Lenters-Westra

  28. Evaluation of the Quo-Test Hemoglobin A1c Point-of-Care Instrument: Second Chance

    Article • Clinical Chemistry, July 2010, Oxford University Press (OUP)

    Erna Lenters-Westra

  29. Six of Eight Hemoglobin A1c Point-of-Care Instruments Do Not Meet the General Accepted Analytical Performance Criteria

    Article • Clinical Chemistry, January 2010, Oxford University Press (OUP)

    Erna Lenters-Westra

  30. Hemoglobin A1c Point-of-Care Assays; A New World with a Lot of Consequences!

    Article • Journal of Diabetes Science and Technology, May 2009, SAGE Publications

    Erna Lenters-Westra

  31. Hemoglobin A1c determination in the A1C-Derived Average Glucose (ADAG) study

    Article • Clinical Chemistry and Laboratory Medicine (CCLM), January 2008, De Gruyter

    Erna Lenters-Westra