Plasma C-peptide concentrations after a prolonged fast
Plasma C-peptide concentrations after a prolonged fast
Relation between plasma glucose and C-peptide concentrations in healthy individuals and patients with an insulinoma after a prolonged fast. In patients who become hypoglycemic, a plasma C-peptide concentration above 0.2 nmol/L is suggestive of an insulinoma. To convert plasma glucose values to mmol/L, multiply by 0.056.