This test is performed following a positive screen for Urine Reducing Substances in order to identify the specific sugars present, and provide a qualitative estimation. Sugar chromatography may aid the diagnosis of classical galactosaemia, sucrose malabsorption, lactose intolerance or fructosuria/hereditary fructose intolerance.
Glucose is commonly present in small amounts in the urine of healthy individuals. Lactose, and galactose, may also be present following the ingestion of milk and milk products.
Neonatal/infantile presentation of generalised failure to thrive symptomology, chronic diarrhoea, hepatic dysfunction.
Random urine in universal container
For investigation of classical galactosaemia, infant must be on lactose-containing milk feeds at time of urine collection.