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Controversies on how diabetes is diagnosed
Samir Malkani1, Taniya DeSilva
1University of Massachusetts Medical School, Worcester, Massachusetts 01655, USA. samir.malkani@umassmemorial.org
Current Opinion in Endocrinology, Diabetes, and Obesity
|February 14, 2012
Summary
Recent updates revise diabetes diagnosis, incorporating hemoglobin A1C (HbA1c) testing. While convenient, HbA1c has limitations, and controversies persist regarding gestational diabetes diagnosis and optimal testing methods.
Area of Science:
- Endocrinology
- Clinical Diagnostics
- Metabolic Disorders
Background:
- Diabetes diagnosis has evolved with new guidelines.
- Hemoglobin A1C (HbA1c) is now widely accepted for diagnosis.
- Gestational diabetes criteria have also been updated.
Purpose of the Study:
- To review controversial aspects of current diabetes diagnostic methods.
- To assess the utility of updated diagnostic guidelines.
- To explore emerging diagnostic tools in diabetes.
Main Methods:
- Review of recent publications and guideline updates.
- Analysis of diagnostic criteria for diabetes and gestational diabetes.
- Evaluation of hemoglobin A1C, oral glucose tolerance tests, and genetic/antibody testing.
Main Results:
- Hemoglobin A1C (HbA1c) offers convenience and reproducibility but can be unreliable and miss diagnoses.
- The 6.5% diagnostic threshold for HbA1c remains debated.
- No consensus exists for gestational diabetes diagnosis; oral glucose tolerance test utility is declining.
- HbA1c aids in diagnosing diabetes in acutely ill patients.
- Genetic and antibody testing show utility in specific cases.
Conclusions:
- HbA1c inclusion simplifies diagnosis but requires careful interpretation due to limitations.
- Ongoing debate surrounds optimal diagnostic thresholds and methods, especially for gestational diabetes.
- Emerging tests like genetic and antibody panels offer valuable insights in select diabetes cases.
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