Gut Motility Study with Motility Index (24-hour Small Intestinal Fluid Analysis)

What This Test Measures

The test measures the flow and composition of fluids in your small intestine, including indicators of motility (how quickly food moves through) and potential abnormalities in fluid absorption or secretion. It may include measurements of electrolytes, pH levels, and other markers in collected fluid samples.

How the Test Works

You’ll ingest a special capsule or take a liquid containing a marker that travels through your digestive tract. Fluid samples are collected at specific intervals (often via nasogastric tube or capsule retrieval) to analyze movement and composition. Some tests may use a capsule that collects fluid automatically over 24 hours.

Common Uses

This test is used to diagnose conditions like gastroparesis (delayed stomach emptying), small bowel obstruction, or other motility disorders. It can also help determine if symptoms like bloating, nausea, or unexplained weight loss are linked to digestive movement issues.

Possible Preparations

Follow your healthcare provider’s instructions carefully. You may need to avoid certain foods or medications for a few days before the test. Some tests require fasting, while others may allow normal eating but restrict certain liquids or foods to ensure accurate results.