Described herein are methods of management of functional dyspepsia in a patient by administering an amylin analogue or a CCK composition to the patient. Methods of diagnosing such patient include a standard gastric-emptying assessment using a standardized solid meal along with measurements of blood glucose levels. Another method of diagnosing such patient includes a gastric-emptying scintigraphy assessment with labeled carbohydrates or other assessments to diagnose rapid carbohydrate gastric emptying.

Described herein are methods of management of functional dyspepsia in a patient by administering an amylin analogue or a CCK composition to the patient. Methods of diagnosing such patient include a standard gastric-emptying assessment using a standardized solid meal along with measurements of blood glucose levels. Another method of diagnosing such patient includes a gastric-emptying scintigraphy assessment with labeled carbohydrates or other assessments to diagnose rapid carbohydrate gastric emptying.

A gastric emptying breath test method that includes collecting a breath sample of the subject at only a single time point after the subject consumes the breath test meal, wherein the single time point is a time point selected from within an identified time window.