laboratory test can help to diagnosis lactose intolerance?
A)stool fat test
B)Schilling test
C)hydrogen breath test
D)D-xylose test

Question

Quizplus · Accepted Answer

The hydrogen breath test is the most commonly used laboratory test for diagnosing lactose intolerance. The test measures the quantity of hydrogen in the breath after consuming a lactose solution. If lactose is not properly digested, it will be fermented by bacteria in the colon and produce excess hydrogen, which can be detected in the breath. Stool fat tests and D-xylose tests are not specific to lactose intolerance and are used to diagnose other gastrointestinal disorders. The Schilling test is used to diagnose vitamin B12 deficiency. The hydrogen breath test is considered the best choice for diagnosis of lactose intolerance. The test involves drinking a solution of lactose and measuring the amount of hydrogen in the breath. In people with lactose intolerance, bacteria in the colon ferment the lactose, producing hydrogen gas that can be detected in the breath. The test is non-invasive, safe and reliable.

Laboratory Test Can Help to Diagnosis Lactose Intolerance