Simple breating test to evaluate impaired carbohydrate uptake or metabolism, e.g. lactose intolerance. After drinking a solution containing lactose or fructose, the amount of hydrogen (H2) in the exhaled air is assessed. An increase in H2 is found in case of impaired lactose metabolism (= lactose intolerance) or impaired fructose uptake of the mucosa (= fructose malabsorption).
The FAZ is an appointment clinic and not an acute ambulance.
In case of acute symptoms, please contact specialists or hospital outpatient departments.