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Colonic Transit Time Test


Updated May 23, 2012

Written or reviewed by a board-certified physician. See About.com's Medical Review Board.


The colonic transit time test is a diagnostic procedure that offers information as to how long it takes for food to travel through your digestive system. It is used to gain a better understanding of how well your large intestine is functioning in terms of moving stool along.

The test involves swallowing capsules that contain markers that can be seen in an X-ray. X-rays of your lower abdomen will be taken on subsequent days. As there are various forms of this test, the number of capsules and the number of days in which X-rays are taken will vary.

Anal Sphincter EMG | Anorectal Manometry | Balloon Expulsion Test | Barium Enema | Colonoscopy | Defecography | Hydrogen Breath Testing | Lactose Intolerance Testing | MRI Defecography | Sigmoidoscopy | Upper GI Series | Upper Endoscopy | Virtual Colonoscopy

Also Known As:
  • Bowel transit time test
  • Colonic transit time study
  • Sitzmark study

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