Indications directory

There are three different methods to determine lactose intolerance:

1. Lactose-tolerance-gene-test

Genetic evidence of lactase-gene-polymorphism. In the FRG, the CC- or CT-polymorphisms with accompanying lactose-intolerance-predisposition are evident in 15-25% of the normal population. The existence of those variants does not necessarily lead to clinical symptoms of lactose intolerance.

2. Lactose-H2-breath-test:

This is a functional test, which enables evidence of hereditary as well as acquired types of lactose-intolerance and is carried out in our laboratory practice (duration approximately 3 hours). Please see function tests.

3. Lactose-tolerance-test:

This is also a functional test. After administering 50 g lactose there will be multiple blood extractions for evaluation of glucose. Please refer to function tests.

Addendum:

On clinical suspicion of lactose-intolerance in children, an additional stool testing for lamblia is recommended.