Bowel transit time

How the test is performed:

You swallow 2 gelatin capsules filled with carmine red or another food marker with a meal. Then you observe your bowel movements and record how long it takes after the capsules are swallowed until the dye first appears. Keep track of how long it takes for the marker to disappear from the stools.

How to prepare for the test:

There are usually no special preparations, however you should follow any diet or other directions from the health care provider.

How the test will feel:

Swallowing the gelatin capsules is the only feeling associated with the test.

Why the test is performed:

The test offers a way to become more aware of the bowel function. The person can record improvement of transit times as fiber is introduced into the diet.