Measurement of plasma glucose, insulin, C-peptide, and β-hydroxybutyrate ... leads to as much as 40–80% crossreactivity with proinsulin. 6 Monoclonal assays have overcome this issue, and ...

Ekberg and colleagues proposed that in type 1 diabetes a deficiency of C peptide, a subunit of the proinsulin molecule, also contributes to nerve damage; their animal studies showed that C-peptide ...

insulin at 30 minutes and 120 minutes, proinsulin, and serum C-peptide -- related to high insulin resistance in people with aortic stenosis. A person is said to be insulin resistant when his or ...

insulin at 30 minutes and 120 minutes, proinsulin, and serum C-peptide—that were associated with increased AS risk. These biomarkers remained significant predictors of AS, even after adjusting ...