Four-sample lactose hydrogen breath test for diagnosis of lactose malabsorption in irritable bowel syndrome patients with diarrhea

Figure 1 Lactose malabsorption and lactose intolerance detection rates over time in irritable bowel syndrome patients with diarrhea group (A) and healthy volunteer group (B). The detection rates of LM and LI increased over time and reached a peak at 150-180 min interval. LM: Lactose malabsorption; LI: Lactose intolerance; IBS-D: Irritable bowel syndrome patients with diarrhea.