OBJECTIVE
We evaluated the respective value of insulin, C-peptide and proinsulin levels in 33 patients with endogenous hyperinsulinism and in 67 controls to determine the best parameters and thresholds to make or to rule out the diagnosis of endogenous hyperinsulinism.
RESULTS
When blood glucose levels were below 2.5 mmol/l, insulin was <21 pmol/l in 8-35% of the patients and in all controls;...
