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Wei L, Weifeng Z, Zuoliang D. Differential Effects on HbA1c Detection by HPLC and Capillary Electrophoresis in Five Types of Hb Variants in China. Lab Med 2022; 54:308-316. [PMID: 36242591 DOI: 10.1093/labmed/lmac121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Abstract
Objective
Hemoglobin A1c (HbA1c) can be used to evaluate blood glucose control. Its measurement will be affected by many factors, but Hb variation is the most critical factor. This study aimed to explore the types of variants found in routine work and their impact on test results.
Methods
Samples with abnormal HbA1c chromatograms found in routine testing were tested with high-performance liquid chromatography (HPLC) and capillary electrophoresis (CE) and then further tested with polymerase chain reaction (PCR) and sequencing.
Results
Five recessive heterozygous mutations were identified after PCR and sequencing. Hb Riccarton-II (a mutation in the HBA2 gene), Hb E, Hb G-Coushatta, Hb G-Taipei, and Hb North Manchester (a mutation in the HbB gene) were identified. All HbA1c values of these variants detected by HLC-723 G8 (HPLC method) were lower than those of Sebia Capillarys 2 FP (C2FP, CE method) with P < .0001.
Conclusion
Five Hb mutations were identified in our routine HbA1c test, and their HPLC detection values were significantly lower than those obtained with the CE method.
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Affiliation(s)
- Luo Wei
- Clinical Laboratory Department, General Hospital of Tianjin Medical University , Tianjin , China
| | - Zhang Weifeng
- Key Laboratory Experimental Teratology of the Ministry of Education, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University , Jinan , China
| | - Dong Zuoliang
- Clinical Laboratory Department, General Hospital of Tianjin Medical University , Tianjin , China
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