This is a test used to look inside your esophagus, stomach, and the first part of your small intestine. It is used to evaluate problems like heartburn, acid reflux, ulcers, or stomach pain.
A long, bendable scope is used for the test. It is passed down your throat into your stomach and small intestine. The scope sends a picture of the inside of your to a TV screen.
Tools can be passed through the end of the scope. They can be used to stop bleeding or take a sample of tissue.