A 48-Year-Old Man Comes to the Office Due to Generalized

A 48-year-old man comes to the office due to generalized bone pain.  The patient has a history of Crohn disease and underwent extensive small bowel resection several months ago.  His current medications are mesalamine and infliximab, and he has not used glucocorticoids recently.  The patient has a sedentary lifestyle and spends most of his time watching television.  Physical examination shows bony tenderness of the lower spine, pelvis, and lower extremities.  There is mild weakness of proximal limb muscles.  Radiographs reveal diffuse osteopenia of the spine and pseudofractures in both femoral necks.  Which of the following sets of laboratory findings is most consistent with this patient's current condition?

A) A
B) B
C) C
D) D
E) E

Correct Answer:

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