Breath Testing (Methane)

Hydrogen Breath Test (Lactulose, Glucose, Lactose, Fructose)

The glucose and lactulose breath tests are done to determine if there is excessive bacteria in the small bowel. Lactulose testing may also be used to determine the time it takes to move through the small bowel. The lactose breath test is used to determine if the patient has lactose intolerance. Fructose testing is used to determine if fructose intolerance exists. The most common problems studied are:

  • Abdominal pain
  • Bloating and gas
  • Diarrhea or constipation

The breath test can last up to 2-1/2 hours.

Urea Breath Test/H. Pylori Screening Test

A urea breath test is used to find out if there is urease (an enzyme produced by the bacteria Helicobacter pylori) in the stomach. It is used to diagnose the infection and to monitor the effectiveness of treatment.