Breath tests.
D001647:Bile Acids and Salts / Q000378:metabolism; D001944:Breath Tests; D002245:Carbon Dioxide; D002250:Carbon Radioisotopes; D004040:Dietary Carbohydrates / Q000378:metabolism; D004041:Dietary Fats / Q000378:metabolism; D006801:Humans; D006859:Hydrogen; D007421:Intestine, Small / Q000382:microbiology; D007787:Lactose Intolerance / Q000175:diagnosis; D008111:Liver Function Tests; D008286:Malabsorption Syndromes / Q000175:diagnosis*
D001647:Bile Acids and Salts; D002250:Carbon Radioisotopes; D004040:Dietary Carbohydrates; D004041:Dietary Fats; D002245:Carbon Dioxide; D006859:Hydrogen