An ionized calcium test measures the levels of a specific form of calcium in your blood. It’s performed by taking a small blood sample. You’ll typically need to fast before the test. Calcium is an ...

A calcium blood test checks your calcium levels to monitor bone, kidney, and thyroid diseases. You may get one of two main types of calcium blood tests: total calcium and ionized calcium tests. Too ...

Normal serum ionized calcium levels are crucial to many aspects of physiologic stability. Disturbances in ionized calcium are known to occur frequently in critically ill adults, and to be poorly ...