The following urinalysis results were obtained from a 4-mont…

The following urinalysis results were obtained from a 4-month-old infant who experienced vomiting and diarrhea after milk ingestion and failed to gain weight: pH: 6 Protein, Glucose, Blood, Ketones, Bilirubin: negative Bilirubin: moderate Clinitest: 2+ These results are clinically significant in which of the following conditions?