What is the expected normal range for serum calcium levels?

The expected normal range for serum calcium levels is indeed between 8.5 and 10.5 mg/dL. This range reflects the typical concentration of calcium in the bloodstream necessary for various physiological functions, including bone health, muscle contraction, and nerve function. Maintaining calcium levels within this range is crucial for overall health, as both hypocalcemia (low calcium levels) and hypercalcemia (high calcium levels) can lead to significant health issues.

This range takes into account total serum calcium, which includes both free (ionized) calcium and calcium bound to proteins. Measurements outside this range can indicate underlying health problems, including parathyroid issues or vitamin D deficiencies, among other conditions. Thus, recognizing this normal range is essential for interpreting calcium levels accurately when assessing patient health.