Calcium, Ionized

Description

The Calcium, Ionized test measures the level of free, physiologically active calcium in the blood. Unlike total calcium tests, which measure both bound and unbound calcium, this test focuses on the biologically available calcium that plays crucial roles in various bodily functions. Ionized calcium is essential for muscle contraction, nerve function, blood clotting, and bone formation. This test provides a more accurate assessment of calcium status, especially in critically ill patients or those with conditions affecting protein levels. It’s particularly useful in diagnosing and monitoring disorders of calcium metabolism, parathyroid gland function, and certain critical illnesses.