Not a marker for hyperparathyroidism is -: (A) Increase in serum calcium, (B) Increase in 24 hour urinary calcium excretion, (C) Increase in serum calcitonin, (D) Subperiosteal resorption of phalanges
Answer is C. markers include increased serum calcium, 24-hr urinary calcium , creatinine clearance, bone mineral density ( Harrison 17 pg 2383)