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USMLE · Question #561
USMLE Question #561: Real Exam Question with Answer & Explanation
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Question
A 6-day-old breast-fed boy is brought to the emergency department by his mother because of poor weight gain and irritability since delivery, and a 2-hour history of vomiting. Physical examination shows jaundice and hepatomegaly. A reducing substance test result of the urine is positive, and a glucose oxidase test result is negative. The concentration of which of the following metabolites in liver is most likely increased in this patient?
Options
- AFructose 1, 6-bisphosphate
- BGalactose 1-phosphate
- CGlucose 1-phosphate
- DGlucose 6-phosphate
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