In what range is normal serum calcium level usually found?

Normal serum calcium levels are typically found in the range of 8.5 to 10.5 mg/dL. This range is established based on numerous studies and clinical guidelines, which indicate that calcium plays a crucial role in various physiological processes, including bone health, muscle function, and nerve transmission. Maintaining calcium within this range is important for overall health; both hypocalcemia (low calcium levels) and hypercalcemia (high calcium levels) can lead to significant clinical issues.

The other ranges provided do not align with the accepted normal values. For instance, levels of 10.0 to 12.0 mg/dL would suggest a possible mild hypercalcemia, which is not considered normal. Similarly, serum calcium levels of 7.0 to 9.0 mg/dL fall below the normal range and could indicate hypocalcemia, which can have various health implications, such as muscle spasms or neurological issues. Lastly, a range of 12.0 to 14.0 mg/dL is considerably high and would typically denote severe hypercalcemia, which requires prompt medical evaluation and management. Thus, the range of 8.5 to 10.5 mg/dL is recognized as the standard for normal serum calcium