Glucagon

Glucagon is a hormone produced by the pancreas that raises blood glucose by triggering the liver to release stored sugar. A glucagon test measures this hormone's level in your blood. Elevated glucagon can indicate diabetes, pancreatic tumors, or kidney disease, while abnormally low levels are rare but may suggest pancreatic insufficiency. This test is often used in specialized evaluations of blood sugar regulation and pancreatic function, typically ordered alongside glucose and insulin tests.