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Case Report

Hb H Interference on Measurement Of HbA1c With Ion-Exchange HPLC

Mehmet Agilli, Halil Yaman, Fevzi Nuri Aydin, Erdinc Cakir, Tuncer Cayci, Yasemin Gulcan Kurt, Emin Ozgur Akgul, Ibrahim Aydin.

In this article, an interference caused by hemoglobin H (Hb H), during the measurement of hemoglobin A1c (HbA1c) with ion exchange high pressure liquid chromatography (HPLC) method, was presented in blood sample of a 20-year-old male patient. HbA1c measurement was performed with Agilent 1200 HPLC system using a commercial Recipe HbA1c ion-exchange column. Hemoglobin electrophoresis was performed with Interlab G26 agarose electrophoresis automated compact system. HbA1c level was 18.2% and HbA0 level was 81.5% with ion-exchange HPLC method. Patientís fasting serum glucose was assessed before HbA1c measurement and the result was 165 mg/dL (9.16 mmol/L). On the other hand, the result of HbA0 was 87.9%, Hb H was 10.8% and Hb A2 was 1.3% with electrophoresis. Whole blood test values were within reference ranges except MCV. MCV value was 79.6 fL. It is important to keep in mind that HbA1c level might be considered falsely high with ion-exchange HPLC method because of Hb H containing sample.

Key words: Hemoglobin H; Hemoglobin A1c, High Pressure Liquid Chromatography.

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American Journal of Preventive Medicine and Public Health


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