Plasma proinsulin concentrations after a prolonged fast
Plasma proinsulin concentrations after a prolonged fast
Relation between plasma glucose and proinsulin concentrations in healthy individuals and patients with an insulinoma after a prolonged fast. In patients who become hypoglycemic, a plasma proinsulin concentration above 5 pmol/L is suggestive of an insulinoma. To convert plasma glucose values to mmol/L, multiply by 0.056.