Your primary care physician may be able to provide an accurate EPI diagnosis and discuss treatment options. Or, your doctor may refer you to a specialist. If your doctor refers you to a specialist, it will likely be a gastroenterologist. Gastroenterologists specialize in disorders of the gastrointestinal tract—this includes the stomach, intestines, pancreas, liver, and gallbladder—and do many of the tests used to diagnose pancreatic conditions, including EPI.
This type of test is considered the most accurate way to assess the exocrine function of your pancreas. It involves inserting a tube into your small intestine to collect pancreatic secretions. This test is usually performed only at specialized centers and its use is limited.