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Our Services / Fructose Intolerance Testing

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Fructose Intolerance Testing services offered in Chesterfield, MO

Fructose intolerance testing can help you find out if the simple sugar fructose is causing your abdominal pain and bloating. Gateway Gastroenterology in Chesterfield, Missouri, offers fructose intolerance testing to diagnose conditions like fructose intolerance and fructose malabsorption. To find out more about fructose intolerance testing, call the office or request an appointment online today.


Fructose Intolerance Testing Q & A

What is fructose intolerance?

Fructose intolerance is the inability to properly digest and absorb fructose. Fructose is a type of simple sugar in many foods — and it’s the main source of carbohydrates in fruit.

There are two types of fructose intolerance:

Dietary fructose intolerance

Dietary fructose intolerance means the cells in your gastrointestinal tract are unable to absorb fructose, causing gas, bloating, and diarrhea. People diagnosed with irritable bowel syndrome (IBS) may have this type of intolerance. 

Hereditary fructose intolerance

Hereditary fructose intolerance is a genetic condition. People with hereditary fructose intolerance lack the enzyme needed to break down fructose, so they can’t digest any type of fructose.

What is fructose intolerance testing?

Fructose intolerance testing is a procedure that helps determine if your gastrointestinal symptoms are due to problems with the digestion and absorption of fructose. 

For the test, your gastroenterologist at Gateway Gastroenterology measures the amount of hydrogen in your breath after consuming a high-fructose beverage. Elevated hydrogen levels in your breath indicate fructose intolerance. 

What do I need to do to prepare for fructose intolerance testing?

Your provider at Gateway Gastroenterology gives you very specific instructions on the steps you need to take to prepare for fructose intolerance testing. That includes the types of medications and food you can and cannot consume prior to the test.

The day before fructose intolerance testing, Gateway Gastroenterology recommends you only eat hard-boiled or scrambled eggs; simple salad with oil and vinegar; baked or broiled chicken or fish; and unflavored black coffee or tea.

Eating or drinking any not permitted items may affect your test results.

You must also stop eating and drinking two hours before your test. 

What happens during fructose intolerance testing?

Gateway Gastroenterology performs fructose intolerance testing at the office. First, the technician has you breathe into a hand analyzer through a disposable breathing tube that measures your breath hydrogen levels.

Your provider has you drink a solution with fructose and collects additional breath samples every 15 to 20 minutes. They also ask about other symptoms you might have after drinking the solution, such as abdominal pain or bloating. The entire test takes two to four hours. 

You can resume your usual diet and activities after the test. Your gastroenterologist analyzes the data and schedules a follow-up appointment to discuss the results.

To see if you’re a candidate for fructose intolerance testing, call Gateway Gastroenterology or request an appointment online today.

Gateway Gastroenterology


Main Office – Chesterfield:
121 Saint Luke’s Center Drive, Suite 406, Building A
Chesterfield, MO 63017
Phone: 314-529-4900 | Fax: 314-434-2679 | After-Hours Exchange: 855-224-7875

 
Gateway Endoscopy Center: 314-336-1130
St. Luke’s Hospital – GI Lab (East Medical Building): 314-542-4863
St. Louis Multispecialty Surgery Center: 636-779-0079