What is the expected serum calcium level range for a normal adult?

The expected serum calcium level range for a normal adult typically falls between 8.6 and 10.2 mg/dL. This range is used clinically as a standard reference to evaluate calcium status in patients. Maintaining serum calcium levels within this range is crucial for various physiological processes, including bone health, muscle function, and nerve transmission. Abnormal levels outside of this range may indicate underlying conditions such as hyperparathyroidism, vitamin D deficiency, or malignancies, among other issues.

Calcium in the blood exists in both free (ionized) and bound forms, and the total serum calcium reflects both types. Therefore, knowing the typical range helps healthcare providers manage and diagnose various endocrine disorders effectively.