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Targeting HbA1c: standardization and clinical laboratory measurement
1Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA.
MLO: Medical Laboratory Observer
|March 5, 2008
Summary
Hemoglobin A1c (HbA1c) measures average blood glucose, but variants can affect accuracy. Alternative tests like glycated albumin are available but lack long-term complication data.
Area of Science:
- Clinical Chemistry
- Endocrinology
- Diabetes Mellitus Research
Background:
- Diabetes management relies on monitoring average blood glucose.
- Hemoglobin A1c (HbA1c) is a key long-term glycemic control indicator.
- Standardization of HbA1c measurements is crucial for reliable clinical decisions.
Purpose of the Study:
- Review the role and measurement of HbA1c in diabetes.
- Discuss standardization efforts by NGSP and IFCC.
- Address limitations of HbA1c testing, especially with Hb variants.
Main Methods:
- Review of existing literature on HbA1c, diabetes complications, and measurement techniques.
- Analysis of standardization initiatives (NGSP, IFCC).
- Evaluation of alternative glycemic markers (glycated albumin, fructosamine).
Main Results:
- HbA1c correlates with diabetic complications, guiding treatment goals.
- NGSP and IFCC have advanced HbA1c standardization.
- HbA1c methods face limitations with hemoglobin variants, impacting accuracy.
- Alternative markers like glycated albumin and fructosamine have shorter detection periods and lack long-term complication data.
Conclusions:
- Careful selection of HbA1c methods is vital in populations with high Hb variant prevalence.
- Glycated albumin and fructosamine may be alternatives but require cautious interpretation.
- Further research is needed for guidelines on alternative markers in specific patient groups.
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