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The relationship between glycosylated haemoglobin (HbA1c) and measures of insulin resistance across a range of glucose tolerance
journal contribution
posted on 2023-06-08, 13:30 authored by Anwar Borai, Callum Livingstone, Fatima Abdelaal, Ali Bawazeer, Vuyolethu Keti, Gordon FernsGordon FernsAIM This study aimed to assess the correlation between HbA1c and insulin resistance as measured by a variety of different indices in subjects from across the glycaemic spectrum. METHODS Subjects with normal glucose tolerance (NGT; n = 24), impaired fasting glucose (IFG; n = 12), impaired glucose tolerance (IGT; n = 12), and type 2 diabetes (DM; n = 13) were studied. All had specimens taken in the context of a standard oral glucose tolerance test at their first visit and had the insulin sensitivity parameter (Si) determined by frequently-sampled intravenous glucose tolerance test at a second visit. RESULTS HbA1c was more strongly associated with Si in NGT (r = - 0.65) than in IFG (r = - 0.48). Compared to other indices of insulin resistance HbA1c has minimal overlap in values (0.0%) between NGT and subjects with type 2 diabetes. CONCLUSIONS HbA1c can be used as a simple and reliable marker of insulin resistance in NGT adults with relatively high insulin sensitivity.
History
Publication status
- Published
Journal
Scandinavian Journal of Clinical & Laboratory InvestigationISSN
0036-5513Publisher
Informa HealthcareExternal DOI
Issue
2Volume
71Page range
168-172Department affiliated with
- Division of Medical Education Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-11-12Usage metrics
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