Disorders of carbohydrate metabolism Quiz: Ace Your Exams
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An 8-month-old male infant is brought to the physician for evaluation of failure to thrive. Two months ago, the patient began losing weight and has had progressive muscle weakness. The patient has also had several seizures. The patient’s diet currently consists of breast milk as well as pureed apples and juice, which were added to the patient’s diet at around 6-months of age. Temperature is 37.6°C (99.7°F), blood pressure is 101/50 mmHg, and pulse is 103/min. The patient is currently at the 15th percentile for weight whereas at the patient’s 6-month check-up, the patient was at the 45th percentile. Physical examination is notable for jaundice and hepatomegaly. Laboratory testing is shown below. Urine testing is positive for non-glucose reducing substances. Which of the following sets of additional laboratory findings is most likely present in this patient?
| Laboratory Value | Result |
| Aspartate aminotransferase (AST) | 87 U/L |
| Alanine aminotransferase (ALT) | 93U/L |
| Bilirubin, Total | 2.0 mg/dL |
| Blood urea nitrogen (BUN) | 32 mg/dL |
| Creatinine | 1.7 mg/dL |
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