SIBO Tests

  • Lactulose and glucose are used as substrates. You will be given these substrates as part of the testing.
  • Prior to testing, patients must be off any antibiotics for two weeks, avoid high fiber foods the day before, and fast for 12 hours before the testing.
  • Results will vary based on the types and proportions of colonizing bacteria, residual carbohydrates, as well as the patient age and sex. However, there is an objective diagnostic threshold that will help determine if someone is living with SIBO.
  • Stop eating or drinking four to eight hours before the procedure, or as recommended by your doctor. This is to ensure that your stomach is empty for the procedure.
  • Stop taking certain medications, such as blood thinners, before the procedure as recommended by the doctor.
  • During the testing, monitors will often be attached to your body so that your vitals such as blood pressure and breathing can be monitored during the procedure.
  • You will likely be given a sedative to help you relax during the procedure.
  • An anesthetic will be sprayed in your mouth to numb your throat so that the doctor can place the tube down your throat for the testing without you feeling any discomfort. A mouth guard may also be placed in your mouth.
  • Once the tube is placed in your throat, it will travel down your esophagus and into your digestive tract to look for any abnormalities. Once the tube reaches the duodenum in your small bowel, the doctor will use special tools attached to the tube to extract the culture sample.



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Casa de Sante

Casa de Sante


Gluten free low #FODMAP certified foods for digestive sensitivities. Delicious functional foods developed by a physician scientist, full of flavor and function.