Barium EnemaAir Contrast Study, Lower Gastrointestinal Series What Affects the TestReasons you may not be able to
have the test or why the results may not be helpful include: - Stool or gas in the colon.
- Muscle
spasms in the colon wall.
- Inability to remain still or to cooperate
during the test.
- Extreme
obesity.
- A barium swallow test (upper gastrointestinal series) done within a week before the test.
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