St Vincent's Clinic Medical Imaging & Nuclear Medicine

Colonic Transit Scan

A Colonic Transit Scan evaluates bowel transit disorders.

What will happen when you have your Colonic Transit Scan

A colonic transit scan is conducted over 5 consecutive days:

Day 1: When you arrive in the nuclear medicine department you will be required to drink a cup of milk mixed in with a small amount of a radioactive tracer. If you are unable to drink milk you can have water instead. You will then be required to return to the nuclear medicine department 6 hours later for 20 minutes of images. You can eat and drink as normal after you have had the radioactive drink.

Day 2 - 5: You will be asked to return to the nuclear medicine department at the beginning of each day at approximately 8:00am for 20 minutes of imaging.

What you need to do and how to prepare for the test

You will not be required to undress for the scan. The scan is performed with the Gamma Camera close to your body but you do not go through a “tunnel”

  • You will need a referral from your doctor
  • You will need an appointment for this test
  • Please inform booking staff if you are or think you could be pregnant or are breastfeeding
  • You can take your medications as normal, omitting laxatives for 3 days prior and during the scan
  • You will be in the department for approximately 20 minutes for each imaging appointment
  • Please bring any previous relevant X-rays or scans to your appointment.
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