The nurse is reviewing the laboratory results of a client who reports taking five times the recommended daily allowance of vitamins and minerals in a multivitamin form. Which finding indicates a possible vitamin D overdose? Reference Range: Bilirubin [0.3 to 1 mg/dL (5.1 to 17 μmol/L)] 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)] Blood Glucose [74 to 106 mg/dL (4.1 to 5.9 mmol/L)]

A) Sodium level 140 mEq/L (140 mmol/L): The sodium level within the reference range does not indicate a vitamin D overdose. Sodium levels are typically not affected by vitamin D overdose. B) Total calcium level 12 mg/dL (3 mmol/L): This finding suggests a possible vitamin D overdose. Vitamin D plays a crucial role in calcium absorption from the intestines. Excessive vitamin D intake can lead to increased calcium absorption, resulting in hypercalcemia. Elevated calcium levels can lead to various symptoms such as nausea, vomiting, weakness, and confusion. Monitoring calcium levels is essential in individuals with suspected vitamin D overdose. C) Total bilirubin 4 mg/dL (68.4 μmol/L): Elevated bilirubin levels typically indicate liver dysfunction or hemolysis. It is not directly related to vitamin D overdose. D) Serum glucose 170 mg/dL (9.4 mmol/L): Elevated glucose levels suggest hyperglycemia, which can occur due to various factors such as diabetes mellitus or stress response. It is not directly related to vitamin D overdose.