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This is a test to assess whether or not movement through the bowel is normal or slow (delayed transit). It is often used to investigate patients who have constipation and/or have symptoms of obstructed defecation where simple laxatives or stool softeners haven’t worked. It is often arranged alongside other tests of bowel function including video proctograms, anorectal physiology tests and end-oanal ultrasonography.

  • Abstain from laxatives, enemas etc. if possible, for 5 days, starting on the day the patient takes the capsules.
  • Take the two capsules at 9am on Sunday morning (each capsule contains 10 radiopaque markers).

  • ​Present at the radiology department on Friday morning at 09:00am (day 5, 120 hours post ingestion) for an abdominal x-ray.​

  • The x-ray images will be reported by the radiologist and the results will be forwarded to your doctor within 5 working days.