A patient's low glucose, increased insulin, and increased C-peptide is caused by:

Question

Quizplus · Accepted Answer

Insulinoma is a tumor of the pancreatic beta cells that secretes insulin, leading to low glucose levels, increased insulin, and increased C-peptide levels. C-peptide is released in equal amounts to insulin by the pancreas, so its increase alongside insulin suggests endogenous production rather than exogenous insulin injection, which would not increase C-peptide levels.

A Patient's Low Glucose, Increased Insulin, and Increased C-Peptide Is