The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 55-year-old man with a history of chronic glomerulonephritis due to IgA nephropathy presents to your office with bone pain. Which of the following laboratory findings would you most expect upon analysis of this patient's serum?   (A) Increased PTH, decreased calcium, increased phosphate, decreased calcitriol   (B) Decreased PTH, increased calcium, increased phosphate, increased calcitriol   (C) Decreased PTH, decreased calcium, increased phosphate, decreased calcitriol   (D) Normal PTH, normal calcium, normal phosphate, normal calcitriol
['(A) Increased PTH, decreased calcium, increased phosphate, decreased calcitriol <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Increased PTH, decreased calcium, increased phosphate, decreased calcitriol \n (B) Decreased PTH, increased calcium, increased phosphate, increased calcitriol \n (C) Decreased PTH, decreased calcium, increased phosphate, decreased calcitriol \n (D) Normal PTH, normal calcium, normal phosphate, normal calcitriol <> possible answers', "  A 55-year-old man with a history of chronic glomerulonephritis due to IgA nephropathy presents to your office with bone pain. Which of the following laboratory findings would you most expect upon analysis of this patient's serum? <> context@"]