The nurse is preparing to administer alendronate to a client with osteoporosis. Which laboratory value indicates that the nurse should withhold the medication and contact the healthcare provider? Reference Range: Total Calcium 19 to 10.5 mg/dL (2.3 to 2.6 mmol/L)] Sodium [136 to 145 mEq/L (136 to 145 mmol/L)] Potassium [3.5 to 5 mEq/L (3.5 to 5 mmol/L)] Magnesium [1.3 to 2.1 mEq/L (0.65 to 1.05 mmol/L)]