Potassium is an essential mineral and important electrolyte in the body. It is crucial for maintaining healthy blood pressure, heart rate, and muscle contraction.
It is the most abundant cation found inside cells. Since most potassium is intracellular, extracellular and serum levels are relatively low, at approximately 4.0 mEq/L. However, small changes can have a significant impact on health. So, having just the right level of potassium in the blood is very important.
Blood levels are mainly regulated by the kidneys, which can retain or excrete potassium in the urine as needed. Potassium can be lost through excessive sweating and diuretic use. Increases in blood potassium above or below the standard range can be detrimental and even fatal.
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