]> 2026-07-31T07:51:08+00:00 WBR1117 0 en Lactose tolerance test Lactose tolerance test has a sensitivity and specificity inferior to the breath hydrogen test and hence usually not preferred. Lactose breath hydrogen test The breath hydrogen test is simple and noninvasive test that has a sensitivity and specificity superior to the absorption test and hence usually preferred. Genetic test for primary lactose malabsorption Genetic test for primary lactose malabsorption is very expensive and hence not done routinely. Small bowel biopsy Small bowel biopsy cannot necessarily establish the diagnosis of disaccharidase deficiency. Large bowel biopsy Large bowel biopsy cannot necessarily establish the diagnosis of disaccharidase deficiency and the pathology lies in the small intestine. Primary Care Office An 18 year old male come to the office for periodic abdominal cramps. The abdominal cramp typically starts after having his meals and is associated with flatulence and non bloody diarrhea sometimes. These episodes are more often associated with intake of dairy products. Otherwise his past history is insignificant. His family history is remarkable for lactose intolerance in his mother. He does not smoke and does not consume alcohol. On examination his vitals are normal. All system examinations are normal. Which of the following would be the next step in the management of this patient? B Gastrointestinal 2020-10-28T02:40:12Z 2459150.61125 WBR1117