Plasma glucose, serum insulin and C-peptide in patients with various stages of chronic renal failure [Glikemija, insulinemija i ce-peptidemija kod bolesnika s razlicitim stepenom bubrezne insuficijencije.]
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Plasma glucose, serum insulin and C-peptide were measured in patients with various stages of chronic renal failure (CRF). In this study we observed 50 patients: 26 women and 24 men, between the ages of 17 and 73. Following various stages of CRF our patients were devided into IV groups, with 10 patients in each. V-th group was control group with 10 healthy persons. Plasma glucose, serum insulin and C-peptide were measured in the fasting state and following the 2 hours oral glucose tolerance test (OGTT). In the fasting state, plasma glucose and serum insulin levels were normal in all groups. With deterioration of the renal function plasma glucose and serum insulin increased slower during OGTT but their levels also decreased slower. Fasting levels of C-peptide increased continually with deterioration of renal function in all patients and values were significantly higher than in control group.