| A | B |
|---|
| Hyperparathyroidism | decreased blood PO4; increased blood Ca |
| Hypoparathyroidism | increased blood PO4, decreased blood Ca |
| PTH | increases calcium tubular reabsorption, decreases phosphorus tubular reabsorption |
| Calcitonin | decreases tubular reabsorption and bone resorption for calcium and phosphorus |
| Cholecalciferol | increases tubular reabsorption and intestinal and bone resorption of both calcium and phosphorus |
| Hypomagnesemia | Similar to hypocalcemia (tetany) |
| Calcium measurement | o-cresol-pthalein complexone |
| Hypocalcemia | tetany |
