Fig. 2. Some typical hydrogen breath test graphs are shown. It shows glucose hydrogen breath test negative for small intestinal bacterial overgrowth (SIBO) (A), glucose hydrogen breath test positive for SIBO (B), lactose hydrogen breath and tolerance test negative for lactose malabsorption (C) and lactose hydrogen breath and tolerance test positive for lactose malabsorption (D). It shows a graph negative for fructose malabsorption (E) and a graph positive for fructose malabsorption (F). ppm, parts per million; FBS, fasting blood sugar; PPBS, post-prandial blood sugar.
© J Neurogastroenterol Motil
