What is the normal range for serum calcium levels?

The normal range for serum calcium levels is indeed 8.5 to 10.5 mg/dL. This range is critical in assessing calcium homeostasis in the body, which plays a vital role in various physiological processes, including muscle contraction, nerve conduction, and blood coagulation. Maintaining calcium levels within this range is essential for overall health, as both low and high serum calcium levels can lead to significant clinical conditions.

Levels below 8.5 mg/dL may indicate hypocalcemia, which can cause symptoms such as muscle spasms, tingling sensations, and cardiac issues. Conversely, a serum calcium level above 10.5 mg/dL may indicate hypercalcemia, which can lead to symptoms such as nausea, vomiting, confusion, and even kidney stones. Therefore, understanding and recognizing the normal serum calcium range is fundamental in the context of fluid and electrolytes, as it helps healthcare providers diagnose and manage potential electrolyte imbalances effectively.