Patient Preparation: No special preparation is required

Procedure: A blood sample is drawn from a vein, usually in the arm.

The Ionic Calcium (also known as Ionized Calcium) test measures the level of free calcium in the blood that is not bound to proteins, representing the biologically active form of calcium in the body. This test is crucial for assessing calcium metabolism and is often used in diagnosing conditions related to parathyroid function, kidney disease, and calcium-related metabolic disorders.