Ionized calcium refers to calcium in your blood that isn’t attached to proteins. It makes up about half of all the calcium in your blood. Another name for ionized calcium is “free calcium” because it’s active and available for use.

Sep 17, 2018 · 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.

Dec 10, 2024 · There are two types of calcium blood tests: Total calcium. This test measures the calcium attached to certain proteins in your blood and “free” (unattached) calcium. Ionized calcium. This test measures the calcium that’s unattached from certain proteins in your blood. Calcium is one of the most important and common minerals in your body.

The ionized calcium blood test is used to diagnose, monitor, or screen for certain conditions that may affect the circulatory system, the kidneys, the nervous systems, or the bones and teeth. It is often part of a routine health screening as it is considered part of the comprehensive metabolic panel and the basic metabolic panel.

The Calcium Correction for Hypoalbuminemia calculates a corrected calcium level for patients with hypoalbuminemia.

Sep 18, 2023 · Ionized calcium: 4.65 to 5.2 mg/dl; High total calcium levels can be caused by: Overactive parathyroid or thyroid gland; Cancer

May 8, 2024 · Ionized calcium is calcium in your blood that is not attached to proteins. It is also called free calcium. Calcium helps build strong bones and teeth. It is important for heart function. It also helps with muscle contraction, nerve signaling, and blood clotting.

Measurement of serum ionized calcium provides insight into the effect of total protein and albumin on serum calcium levels. A patient can have high total calcium, with normal ionized calcium and increased total protein and/or albumin, as in dehydration or in myeloma.

Calcium, Ionized - Ionized calcium represents the true "bioavailable" calcium in the circulation. In situations where the total calcium is normal but does not fit the clinical picture, e.g. , hyperparathyroidism, a determination of the ionized calcium will, many times, show an elevation in the "bioavailable" calcium component.

Jan 14, 2025 · The Ionized Calcium Test measures the active, free calcium levels in the blood, essential for vital physiological functions. Moreover, it evaluates the biologically active calcium, not bound to proteins, providing more accurate results than total calcium tests.