A 72-year-old woman presents to your office complaining of generalized bone pain and weakness. On further questioning, she reports that she has increased thirst, polyuria, heart burns, constipation, tingling and numbness in her fingers and pruritus. A bone densitometry study reveals a significant loss of cortical bone. Physical examination is remarkable for calcium nodules in the skin and tendons. You suspected primary hyperparathyroidism in this patient. Which of the following laboratory test results are most likely in this patient?
