The Total Serum Calcium test measures the total amount of calcium present in the blood. This includes both the free (ionized) and the protein-bound forms of calcium.
Calcium is the most abundant mineral in the human body, with 99% stored in bones. The remaining 1% in the blood is critical for vital functions such as:
This test is routinely included in a Comprehensive Metabolic Panel (CMP) and is used to screen for or monitor conditions affecting the bones, kidneys, or parathyroid glands.