Decreases urinary excretion of phospate. a, b, c calcitonin reduces bones resorption, increasing deposition of calcium and phosphorous in the bones, and increases urinary excretion of calcium and phosphate. magnesium 2.3 mg/dl (0.95 mmol/l) what laboratory value is consistent with the client’s symptoms? a. sodium 147 meq/l (147 mmol/l).