Lactulose (Mandatory baseline test. For small intestinal bacterial overgrowth.)Lactose (Dairy Products)Fructose (Fruits, Onion, Honey)Sorbitol (Stone fruits and sweetener)Manitol (Sugar substitute and some vegetables)Glucose (For small intestinal bacterial overgrowth SIBO)Fructan (wheat, onions, shallots, garlic, barley, cabbage, broccoli, pistachio, artichoke, chicory root, and asparagus)Sucrose (Table Sugar, mango, peach, date, sugar beet, sweet pea, most dried fruits)