What is considered the normal serum calcium level?

The normal serum calcium level for adults generally falls within the range of 8.8 to 10.0 mg/dL. Calcium is an essential mineral in the body, playing a crucial role in several physiological functions such as nerve transmission, muscle contraction, blood coagulation, and bone health. Maintaining calcium levels within this normal range is important for overall health and physiological balance.

Serum calcium levels can vary based on several factors, including the time of day, age, and the laboratory testing methods used, but the 8.8 to 10.0 mg/dL range is widely accepted by medical professionals. Abnormal levels, whether too low (hypocalcemia) or too high (hypercalcemia), can indicate underlying health issues that may require further evaluation and management.

The other ranges provided in the options are outside the established normal limits for serum calcium, which reinforces why 8.8 to 10.0 mg/dL is the appropriate answer.