GES

Medical abbreviation · Gastroenterology

GES
Stands forGastric emptying study
CategoriesMedical

GES stands for Gastric emptying study, a gastroenterology abbreviation.

Nuclear medicine test in which the patient eats a meal labeled with a radioactive tracer, usually technetium-99m egg, and imaging measures how much food remains in the stomach over four hours. It is the standard test for gastroparesis.

Example: GES: 35 percent retention at 4 hours, consistent with moderate gastroparesis.

Usage notes

Retention above 10 percent at four hours is abnormal. Opioids, anticholinergics and GLP-1 receptor agonists delay emptying and should be held when possible. Blood glucose above about 275 mg/dL at the time of the test can produce falsely delayed results. Breath tests using carbon-13 offer an alternative without radiation.

More gastroenterology abbreviations

  • FIT – Fecal immunochemical test
  • FMT – Fecal microbiota transplantation
  • FOBT – Fecal occult blood test
  • GAVE – Gastric antral vascular ectasia
  • GEJ – Gastroesophageal junction
  • GERD – Gastroesophageal reflux disease
  • GI – Gastrointestinal
  • GIB – Gastrointestinal bleeding
  • GIST – Gastrointestinal stromal tumor
  • GORD – Gastro-oesophageal reflux disease
  • GU – Gastric ulcer
  • H. pylori – Helicobacter pylori

See all 85 gastroenterology abbreviations →

Edited by the AbbreviationList.com team. Spotted an error or a missing meaning? Contact us.

This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.