Endoscopy is a test in which a lighted viewing tube (endoscope) is passed down the throat (esophagus), through the stomach, and into the upper
part of the small intestine (duodenum).
After the viewing tube is in the small intestine, it can be used to
obtain a sample of the contents of the small intestine (duodenal fluid). This
sample can then be tested to see if the Giardia parasite
Primary Medical Reviewer
E. Gregory Thompson, MD - Internal Medicine
Specialist Medical Reviewer
W. David Colby IV, MSc, MD, FRCPC - Infectious Disease
September 9, 2011
WebMD Medical Reference from Healthwise
September 09, 2011
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