The calcium test measures the level of calcium in the blood, which is essential for various bodily functions, including bone health, muscle contraction, nerve function, and blood clotting. Calcium exists in two forms in the blood: total calcium (which includes both bound and free calcium) and ionized calcium (the biologically active form). Abnormal calcium levels can indicate a range of health issues, including parathyroid disorders, kidney disease, vitamin D deficiency, or certain cancers. The test is often performed as part of a routine metabolic panel or to investigate specific symptoms. A blood sample is required, and results are interpreted in conjunction with other tests and clinical findings to provide insights into overall health and metabolic status.
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