Lactose Intolerance Testing

Lactose Intolerance Test

  • Testing for intolerance to dairy products
  • Get to the bottom of GI-related symptoms
  • Quick & straightforward procedure with professional service
Pricing £290
Type of sample taken Breath testing
Turnaround time 7 days
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Based on 164 reviews
Many people are lactose intolerant. This means that dairy products could be affecting you. Our clinic is one of the only clinics in London that tests for this common issue - get answers today.

Lactose intolerance occurs when the small intestine is unable to make enough lactase. This enzyme converts lactose (milk sugars) into sugars more accessible to the body (such as glucose).

This means that milk & dairy products containing lactose will cause digestive symptoms when eaten.

Symptoms usually include painful gas, bloating, & diarrhoea, & can lead to a build-up of bad bacteria in the gut, as they feed off the undigested lactose.

We offer lactose intolerance testing, using a hydrogen breath test, for specific milk proteins, including:

  • Alpha-lactalbumin – milk protein
  • Beta-lactoglobulin – milk protein
  • Casein – milk protein
  • Cow’s milk, goat’s milk, sheep’s milk
  • Whey

When should I get tested?

You may want to have this test if you are experiencing symptoms of lactose intolerance & noticing digestive difficulty after consuming dairy & milk products.

You may also be advised to have this test by a doctor, in order to rule out or confirm a diagnosis. You can have this test at any time.

What the test includes

The test for lactose intolerance is a breath test.


Step 1

Preparing for test

No special preparation is required.
Step 2

During the test

You will be given a small quantity of lactose, & then your breath will be tested at intervals to check your hydrogen levels.
Step 3


Your results will be emailed to you, & you will also receive a call from the doctor who recommended your test if this recommendation came from our clinic. If not, you can take your results to your own doctor for analysis or book an appointment to see one of our doctors at the clinic.