Hepatocy - Study guides, Class notes & Summaries

NBME 25 2024 UPDATED EXAM QUESTIONS AND CORRECT ANSWERS |GRADED A+ 1. A9-year-old boy has had alopecia and hypocalcemia since birth. His serum 1,25-dihydroxycholecalciferol concentration is within the reference range, serum 24,25-dihydroxycholecalciferol is undetectable. Serum parathyroid hormone concentration is above the upper limit of the laboratory assay and needs to be reassayed at a dilution. The results are pending. Which of the following is the most likely cause of his condition? O ...