Physiology: How Do Calcium And Potassium Affect Heart

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Ionized calcium is calcium that is freely flowing in your blood and not attached to proteins. It is also called free calcium.

All cells need calcium in order to work. Calcium helps build strong bones and teeth. It is important for heart function, and helps with muscle contraction, nerve signaling, and blood clotting.

This article discusses the test used to measure the amount of ionized calcium in blood.

See also: Serum calcium

Alternative Names

Free calcium; Ionized...

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