Symptoms of SIBO can include:
- Increased passing of gas (flatulence)
- Diarrhea or constipation
- Abdominal pain
In extreme situations, weight loss and anemia may be experienced.
SIBO can be diagnosed with a lactulose breath test or small intestine aspirate and fluid culture to check for bacteria overgrowth, poor fat absorption or other problems related to symptoms that are present.
A lactulose breath test is a noninvasive test measuring the amount of hydrogen exhaled after drinking a specific glucose drink.
The small intestine aspirate and fluid culture is the “gold standard” test for bacterial overgrowth. For this test, an endoscope is passed through the throat into the upper digestive tract and small intestine. Fluids are withdrawn and tested for bacteria.
In addition to these tests, your doctor may order a blood test, stool evaluation, X-ray, CT scan or MRI.
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