Capsule endoscopy


Endoscopy is a way of looking inside the body. Endoscopy is often done with a tube put into the body that the doctor can use to look inside.

Another way to look inside is to put a camera in a capsule (capsule endoscopy). This capsule includes one or two tiny cameras, a light bulb, a battery, and a radio transmitter.

It is about the size of a large vitamin pill. The person swallows the capsule, and it takes pictures all the way through the digestive (gastrointestinal) tract.

How the Test is Performed

This test can be started in the doctor's office.

The capsule is not digested or absorbed. It travels through the digestive system following the same path food travels. It leaves the body in a bowel movement and can be flushed down the toilet without harming the plumbing.

The recorder will be placed on your waist or shoulder. Sometimes a few antenna patches may also be put on your body. During the test, the small light on a recorder will blink. If it stops blinking, call your provider.

The capsule may be in your body for several hours or several days. Everyone is different.

How to Prepare for the Test

Follow your provider's instructions. If you do not follow instructions carefully, the test may have to be done a different day.

Your provider may ask you to:

DO NOT smoke for 24 hours before this test.

Be sure to tell your doctor:

On the day of the test, go to the provider's office wearing loose fitting, two-piece clothing.

While the capsule is in your body you should not have an MRI.

How the Test will Feel

You will be told what to expect before the test is started. Most people consider this test comfortable.

While the capsule is in your body you can do most normal activities, but not heavy lifting or strenuous exercise. If you plan to work on the day of the test, tell your provider how active you will be on the job.

Your provider will tell you when you can eat and drink again.

Why the Test is Performed

Capsule endoscopy is a way for the doctor to see inside your digestive system.

There are many problems it can look for, including:

Normal Results

The camera takes thousands of color photos of your digestive tract during this test. These pictures are downloaded to a computer and software turns them into a video. Your provider watches the video to look for problems. It may take up to a week for you to learn the results. If no problems are found, your results are normal.

What Abnormal Results Mean

Your provider will tell you if they find a problem with your digestive tract, what it means, and how it can be treated.


There are very few problems that can occur with capsule endoscopy. Call your provider right away if, after swallowing the capsule, you:

If your intestines are blocked or narrow, the capsule can get stuck. If this happens, you may need surgery to remove the capsule, although this is rare.

If you have an MRI or go near a powerful magnetic field (like a ham radio) you could have serious damage to the digestive tract and abdomen.

Review Date: 7/13/2019
Reviewed By: Michael M. Phillips, MD, Clinical Professor of Medicine, The George Washington University School of Medicine, Washington, DC. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

This information should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. © 1997- 2007 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.