Small bowel biopsy such as jejunal or duodenal biopsy is the gold standard test for the diagnosis of lactose<unk> . Low lactase activity in small bowel biopsy is confirmatory of lactose<unk> .The<unk><unk>  of choice for lactose<unk>  is lactose breath hydrogen test. Lactose<unk>  is diagnosed based on a rise in hydrogen concentration of 20 ppm ( parts per million) and the presentation of symptoms such as bloating, diarrhea and abdominal pain.
Lactose intolerance diagnostic study of choice
Lactose intolerance other diagnostic studies
Steatorrhea diagnostic study of choice
Pyloric stenosis diagnostic study of choice
Gastric dumping syndrome diagnostic study of choice
Gastric dumping syndrome differential diagnosis
Tropical sprue differential diagnosis
Lactose intolerance risk factors