10-05-2006, 07:59 AM
46. A 60-year-old woman has a serum calcium concentration of 7.0 mg/dL and a serum potassium concentration of 2.8 mEq/L. Her serum parathyroid hormone (PTH) concentration is decreased. The decreased PTH is most likely related to a severe depletion of which of the following?
A) Iodine
B) Iron
C) Magnesium
D) Selenium
E) Zinc
A) Iodine
B) Iron
C) Magnesium
D) Selenium
E) Zinc