A healthy 27-year-old woman presents to your office for a routine exam and is found to have a serum calcium level of 12 mEq/L and a phosphorus level of 2.2 mEq/L. What is the most likely diagnosis? A....

A healthy 27-year-old woman presents to your office for a routine exam and is found to have a serum calcium level of 12 mEq/L and a phosphorus level of 2.2 mEq/L. What is the most likely diagnosis?

A. Renal insufficiency

B. Familial hypocalciuric hypercalcemia