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

Fructose Intolerance Breath Test | IBTF

£257.00 GBP
£257.00 GBP
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IBTF

Symptoms such as bloating, abdominal cramps, gas, or diarrhoea after eating fruit or fructose-containing foods may indicate malabsorption of fructose (a fruit sugar). 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 absorb this sugar properly.

Why Breath Test for Fructose Intolerance 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. The Fructose Intolerance Test provides clarity by detecting fermentation in the gut linked to poor fructose absorption.

What Gets Assessed in the Fructose Intolerance Test?

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

Turnaround Time

  • 48 Hours

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How Our Test Works

  • Book Your Appointment Via The National Blood Test Clinic

    Place Your Order

    Place your order online and receive a test kit delivered to your home. Depending on the test, you may either provide your sample at home using the kit or bring it with you to your scheduled appointment at one of our partner sample collection clinics.

  • Blood Draw for Health Screening

    Attend Your Appointment

    Collect your sample using the kit provided, following the instructions. If a sample collection courier is not available, please seal your sample securely and return it using the prepaid packaging provided.

  • Test to Check Vitamin D Deficiency

    Receive Your Results

    Once your results are ready, you’ll receive an email notification to log in and view them securely via your private portal. Please note that your results will be reviewed by a qualified clinician when you book a consultation

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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.