The presence of reducing substances is useful in the diagnosis of abnormalities in carbohydrate metabolism, i.e., sucrose and lactase. The unabsorbed sugars in stool are measured as reducing substances.
No special preparation is needed for Reducing Substances Stool. Inform your doctor if you are on any medications or have any underlying medical conditions or allergies before undergoing Reducing Substances Stool. Your doctor depending on your condition will give specific instructions.
| Gender | Age groups | Value |
| UNISEX | All age groups | < 0.25 g/dl |