• Fructose Intolerance Breath Test - The National Blood Test Clinic
  • Fructose Intolerance Breath Test - The National Blood Test Clinic
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Fructose Intolerance Breath Test

Fructose Intolerance Breath Test

£69.00 GBP
£69.00 GBP
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Symptoms like bloating, abdominal cramps, gas, or diarrhoea after eating fruit or fructose-containing foods may indicate fructose malabsorption. The Fructose Intolerance Breath Test measures hydrogen and methane levels in the breath after consuming a fructose solution, helping to confirm whether the body struggles to properly absorb this sugar.

Why Fructose Intolerance Breath Test Matters?

Fructose malabsorption is a common yet underdiagnosed cause of digestive discomfort. Identifying intolerance allows individuals to make targeted dietary changes, reducing symptoms and improving quality of life. This test provides clarity by detecting fermentation in the gut linked to poor fructose absorption.

What Gets Assessed?

  • Breath hydrogen and methane levels
  • Digestive response to fructose ingestion
  • Evidence of malabsorption and fermentation

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FAQs

 Who should take the Fructose Intolerance Breath Test?

This test is recommended for individuals with bloating, diarrhoea, abdominal pain, or gas after eating foods containing fructose such as fruits, honey, or high-fructose corn syrup.

How is the test performed?

The Fructose Breath Test measures hydrogen and methane gases in your breath after drinking a fructose solution, helping to detect fructose malabsorption.

How long does the test take?

The test usually lasts 2–3 hours, with breath samples collected at regular intervals.

Can this test diagnose other conditions?

While it is specific to fructose intolerance, abnormal results can sometimes overlap with small intestinal bacterial overgrowth (SIBO), so a doctor may recommend additional testing.

What happens if I test positive for fructose intolerance?

If positive, your healthcare provider may suggest a low-fructose diet or adjustments such as avoiding certain fruits, sweeteners, and processed foods.

How should I prepare for this test?

Follow a restricted diet 24 hours before the test (avoiding high-fibre foods, beans, onions, garlic, and dairy), then fast for 12 hours with only water allowed. On the day, avoid smoking, chewing gum, exercise, and mouthwash. Some medications like antibiotics, probiotics, or laxatives may need to be stopped beforehand, but only under your doctor’s advice.