Lactose intolerance test

Specialty of Allergy & immunology

The lactose intolerance test is a method used to diagnose the ability of the intestines to break down lactose (milk sugar and its derivatives) when it is suspected that the substance is not well digested and causes discomfort. There are two types of tests for lactose intolerance: one involves performing a blood test to detect the presence of blood glucose before and after eating a lactose-containing preparation; and the second one is the breath hydrogen test, which is the storing of the breath, in special sealed bags, before and after having ingested a preparation with lactose. The patient should be blowing in these bags and filling them with air with the hourly frequency that is marked, while his/her automatic reaction to the preparation's intake (increased abdominal volume or other forms of physical discomfort) is monitored.

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