Which lab value indicates hypercalcemia?

Hypercalcemia is defined as an elevated level of calcium in the blood, specifically when the calcium level exceeds the normal threshold. The normal reference range for serum calcium is typically between 8.5 mg/dL and 10.5 mg/dL. When the calcium level rises above this range, it indicates hypercalcemia, which can lead to various physiological effects and symptoms, such as muscle weakness, fatigue, confusion, and more severe complications like cardiac issues.

Choosing the option indicating levels above 10.5 mg/dL aligns with the medical definition of hypercalcemia. It is crucial to monitor calcium levels in patients, particularly those at risk of conditions that can lead to elevated calcium, such as hyperparathyroidism or certain malignancies. This understanding is essential for proper diagnosis and management in clinical practice.