Metabolism USMLE Step 1 Practice Question
A 6 year old boy is brought to the pediatrician after a routine school urine screen shows a positive test for reducing substances. He has no abdominal pain, vomiting, or developmental delay. He eats fruit frequently and has normal growth, normal liver enzymes, and normal fasting glucose. Urinalysis is otherwise unremarkable. Which of the following is the most likely enzyme deficiency?
Answer choices
- AFructokinaseCorrect answer
- BAldolase B
- CGlucose 6 phosphatase
- DGalactokinase
- EGalactose 1 phosphate uridyltransferase
- FGlucokinase
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