What is considered a normal calcium level in the body?

A normal calcium level in the body typically ranges from approximately 9 to 10.5 mg/dL. This range reflects the concentration of calcium in the blood, which is essential for various physiological functions, including bone health, muscle contraction, and nerve signaling. Maintaining calcium levels within this range is critical because both hypocalcemia (low calcium) and hypercalcemia (high calcium) can lead to significant health issues.

The lower range, especially values around 8 to 9.0 mg/dL, is considered below the normal threshold for calcium levels and could indicate a deficiency. Similarly, the higher ranges of 10.5–11.5 mg/dL and 11.5–12.5 mg/dL would indicate elevated calcium levels, which can result from conditions such as hyperparathyroidism or malignancy. Therefore, the range of 9–10.5 mg/dL is the correct standard for normal calcium levels in the body.