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Updated: Aug 17, 2025

Hyperinsulinemic-Euglycemic Clamp in the Conscious Rat
Published on: February 7, 2011
Independent euglycaemic hyperinsulinaemic clamp studies validate clinically applicable formulae to estimate insulin
Andrzej S Januszewski1, Pawel Niedzwiecki2, Nirupa Sachithanandan3
1NHMRC Clinical Trials Centre, University of Sydney, Australia; Department of Medicine, University of Melbourne, Australia.
Background And Aim:
Low insulin sensitivity (IS) increases Type 1 diabetes (T1D) complication risk and can be estimated by simple formulae developed from complex euglycemic hyperinsulinaemic clamp studies. We aimed to validate these formulae using independent clamp data.
Methods:
Clamps were performed in 104 T1D adults. Measured glucose disposal rate (GDR) was correlated with eGDR and eLog10 M/I calculated by five IS formulae.
Results:
Correlations ranged between 0.23-0.40. Two IS formulae (by the authors), using age, sex, HDL-C, HbA1c, pulse pressure, BMI, and waist-hip-ratio had the highest correlation with measured GDR and the best performance in detecting low IS.
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