Glod standard test for insulinoma
A fasting test that may last for up to 72 hrs is regarded as the most sensitive test.Usually , insulin, pro insulin, C-peptide and blood glucose are measured in 1- to 2-hr intervals to demonstrate inappropriately high secretion of insulin on relation to blood glucose. About 80% of insulinomas are diagnosed by this test,most of them in first 24 hrs . Bailey & Love ,26th,788
72 hr fasting test
Plasma insulin levels
C-peptide levels
Low glucose levels < 30 mg\/dl
G.I.T