About the Lactose Intolerance Test
Lactose intolerance is an intolerance to disaccharide (polysaccharide) lactose or milk sugar. This consists respectively of a molecule of the monosaccharides glucose and galactose. Lactose has to be split into its monosaccharides for processing in the small intestine. The enzyme lactase, which is found in the villi of the small intestine, is responsible for this function. Only the monosaccharides can be metabolised by the sodium dependent SGLT1-transporter in the various sections of the intestine.
Depending on the residual activity of the enzyme lactase, the degree of severity of lactose intolerance can differ greatly and the symptoms vary correspondingly. If the milk sugar is not or only partly split by the digestive enzyme lactase, and if larger amounts of milk sugar reach the lower sections of the intestine populated by bacteria, the lactose then feeds the bacteria. This creates large amounts of gases and fatty acids, which leads to complaints.
Lactose intolerance should not be confused with a milk protein allergy. In contrast to an allergy, in which the immune system is involved and the corresponding antibodies are formed, lactose intolerance arises from a deficit or insufficiency of enzyme production without the involvement of the immune system.
Lactose Intolerance Test
- Take your sample at home - conveniently and discreetly
- Receive a state-of-the-art laboratory analysis
- Get a comprehensive results report
- Benefit from specific recommendations on how to live with lactose intolerance
- Receive the result within a few days after your sample’s arrival at the laboratory
Benefits of the Lactose Intolerance Test
Lactose is found in more foods than you think. Of course, a glass of milk has a lot of lactose, as do some dairy products such as cream and cream cheese. But lactose is also found in ready-made products, sweets, baked goods and sausages, among other things.
There are many lactose-free products on the market, which are often expensive and offer no health benefits for people without lactose intolerance. So before you change your diet, it is worth checking whether you really cannot tolerate lactose or whether your symptoms are triggered by something else.
A breath test takes around three hours, which you can simply spend at home with our Lactose Intolerance Test. As you can take our lactose intolerance test at home, waiting times in a practice or clinic are not necessary. The lab analysis is then carried out in a certified specialist laboratory.
Benefit from our expertise: cerascreen® is the market leader for medical sampling and submission kits in Europe, with eight years of experience in test development and analysis. We have developed more than 50 approved send-in test kits (medical devices), evaluated 250,000 samples and serve 19 countries.
Read more about lactose intolerance symptoms, causes, testing and treatment

Results report of the Lactose Intolerance Test
As soon as your sample has been analysed, you will receive your results report via the My cerascreen® app or your user account on our website. You can easily view the report on your smartphone, tablet or computer and print it out, if required.
Find out the concentration of hydrogen and methane in your breath before and after drinking a lactose solution. Learn how to optimise your diet for lactose intolerance with our recommendations. With the comprehensive health information we give you, you can read what happens in your intestines when you are lactose intolerant and which foods you can eat without problems.
View sample report