Colonic Transit Test
For the colonic transit test, you will be asked to swallow 5 small capsules that we send to you approximately 100-hours before your scan. The capsules contains 50 plastic markers which can be seen on an x-ray. On the day of your appointment you will have an x-ray of your abdomen, which will show up any markers left in your bowel.
Image (to the left) shows small ‘markers’ which are swallowed and move through the gut, showing up on an x-ray to tell us how quickly things move through the gut.