The lactose tolerance test will help in clarifying the symptoms of lactose intolerance as an expression of a general, and also answered the question about the severity of the incompatibility. Is it enough to consciously refrain from certain foods or supplements must also be taken to reduce the lactose?

The patient must be fasting a certain amount of a lactose solution to ingest. These are usually 50 grams of lactose in about half a liter of water. Every half hour is then measured by the increase of blood glucose. Only if the organism is able to split the lactose taken up, it will lead to a significant increase in blood glucose. None of these, this indicates lactose intolerance.

Another test is without blood samples is the hydrogen – breath test. This is due to the formation of hydrogen, which arises when an existing lactose intolerance in the degradation of lactose by intestinal bacteria in the intestines and bloodstream and is exhaled through the lungs then with the breath. Both test methods are in addition thereto, as a rule and paid for by health insurance at a reasonable suspicion.