A medical test more commonly known as a barium enema
. The lower g-i series involves filling the colon
sulfate (which is opaque to x-ray
s) and sometimes air and taking x-rays to search for abnormalities. See barium enema
for more detail.
Tests similar in function to the lower g-i series are colonoscopy and sigmoidoscopy, both of which examine the colon or part of the colon. Contrast with the Upper Gastro-Intestinal Series, where the stomach, duodenum, and small intestine are examined.