Osteomalacia and Rickets MCQ — NEET PG Practice Question | NEETPGAI
Osteomalacia and Rickets
hard
bone Orthopedics
A 3-year-old girl with vitamin D-dependent rickets type 1 (VDDR-1) has a serum 25-hydroxyvitamin D level of 28 ng/mL and a 1,25-dihydroxyvitamin D level of 8 pg/mL. A 4-year-old boy with vitamin D-dependent rickets type 2 (VDDR-2) has a serum 25-hydroxyvitamin D level of 32 ng/mL and a 1,25-dihydroxyvitamin D level of 680 pg/mL. Which biochemical finding best distinguishes VDDR-1 from VDDR-2?
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