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 ...

The total calcium blood test is used to measure the total amount of calcium in your blood. Calcium is one of the most important minerals in your body. Most of your body’s calcium is stored in your ...

What Is a Chloride Blood Test? The chloride blood test, sometimes called a Cl test or serum chloride test, is a simple blood test that measures your chloride levels. Why do chloride levels matter? You ...