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SITZMARKS capsule containing 24 radiopaque markers

*Image shown is not to scale

What’s in the Capsule?

Each SITZMARKS® for Kids capsule contains 24 radiopaque markers, which are visible and easy to see before the child swallows it. The capsule dissolves and releases the harmless, tiny radiopaque markers inside the child’s digestive tract. 

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Pediatric Colonic Transit Study Process

SITZMARKS® has been trusted for over three decades to help providers take a closer look at the cause of chronic pediatric constipation. This colonic transit study is easy to administer, kid friendly, and helps give peace of mind to patients’ families.

In a bright exam room, a young girl in a yellow shirt sits on the exam table holding a clinician’s hands. A parent smiles beside her while the clinician in a white coat, seen from behind, speaks with the child.

Simplified Colonic Transit Time Test

Non-Invasive Diagnostic Tool

Safe | Simple | Reliable 

Rx Only 

For Single Dose Only

24 Radiopaque Markers per Capsule (Size 00)

The First Step for Diagnosing Conditions
Such As

Chronic pediatric constipation

Pediatric outlet obstruction

Pediatric hypomotility

Other pediatric bowel disorders

Patient Process

SITZMARKS capsule

Day 1

Pediatric patient swallows the SITZMARKS® capsule containing 24 radiopaque markers. Alternative methods for those who cannot swallow the capsule include opening the capsule and emptying the contents into applesauce (or other similar food).

Sun and Moon

Days 1-4

Pediatric patient continues their normal routine, including school and sports, as the capsule dissolves and releases the harmless, tiny radiopaque markers inside the child’s digestive tract.

Flat plate abdominal X-ray

Day 5

Pediatric patient has a flat plate abdominal X-ray. The healthcare provider will receive radiology results.

Interpreting Pediatric Colonic Transit Test Results

The results of the SITZMARKS® test reveal the path of the markers throughout the child’s digestive tract, providing the initial steps toward identifying a cause with a visual that is easy for patients’ families to understand.  

Normal.avif

Normal Transit

>80% of the markers are passed by Day 5, colonic transit is not grossly abnormal.

Abnormal.avif

Abnormal Transit

When remaining markers are scattered about the colon, condition is most likely pediatric hypomotility or colonic inertia.

Blockage.avif

Potential Blockage

When remaining markers accumulate in the rectum or rectosigmoid, this is most likely functional outlet delay, e.g., internal rectal prolapse, anismus.

Smiling healthcare provider in blue scrubs uses a stethoscope to listen to a young child in a yellow shirt, as they look at each other warmly.

Talking to Your Healthcare Provider

When discussing the SITZMARKS® for Kids test, be prepared to share:

  • Specific pediatric constipation symptoms your child is experiencing

  • How long they’ve had these symptoms 

  • Treatments they’ve already tried (supplements or over-the-counter medications)

  • Any medications they’re currently taking

  • Their typical diet and lifestyle and any recent changes

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