What is the normal range for potassium in mEq/L?

The normal range for potassium in mEq/L is widely recognized as being between 3.5 and 5.0. This range is crucial for maintaining various physiological functions, including nerve conduction, muscle contraction, and cardiac rhythm stability. Potassium levels outside of this range can lead to significant health issues; for instance, hypokalemia (low potassium) can result in muscle weakness, cramping, and cardiac arrhythmias, while hyperkalemia (high potassium) can be life-threatening and may lead to cardiac arrest. Understanding this normal range is essential for healthcare providers when monitoring patients' electrolyte balance and making clinical decisions.