Chronic Kidney Disease USMLE Step 1 Practice Question
A 14-year-old boy presents with recurrent renal colic and hematuria. Vital signs show BP 118/76 mmHg, HR 88/min, RR 16/min, temperature 37.2°C. Urine microscopy reveals hexagonal crystals; serum creatinine is 0.9 mg/dL. He denies fever or dysuria. Family history is significant for a sibling with identical presentations requiring similar management. Which amino acid shares the same proximal tubular transport defect as the substance forming these stones?
Answer choices
- ALysineCorrect answer
- BTyrosine
- CAlanine
- DValine
- EGlutamine
- FProline
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