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Gastric Emptying of Liquids in Children. OBJECTIVES: The present study was performed to determine normal values for gastric half-emptying time (t1/2GE) of liquids in healthy children. METHODS: Gastric emptying (GE) of a standardized test milk-drink measured with technetium scintigraphy and the C-acetate breath test (C-ABT) was compared in 19 children ages between 4 and 15 years with upper gastrointestinal symptoms. The C-ABT was subsequently used to determine normal values for GE of the same liquid test meal in 133 healthy children ages between 1 and 17 years. RESULTS: In the group of children with upper gastrointestinal symptoms, the results showed a significant correlation (r = 0.604, P = 0.0006) between t1/2GE measured with both techniques. In the group of healthy children, the results of t1/2GE showed that there was no influence of age, sex, weight, height, and body mass index on GE. CONCLUSIONS: Normal values for GE of a standardized test milk-drink in healthy children were determined with the C-ABT. This technique is considered reliable and is well accepted by the patients.