What is the normal range for potassium levels?

The normal range for blood potassium levels is typically between 3.5 and 5.0 millimoles per liter (mmol/L). Values below this range indicate hypokalemia, while values above suggest hyperkalemia. Minor deviations may not cause symptoms but can signal underlying health issues, such as kidney or adrenal disorders. Maintaining potassium within the normal range is essential for heart, muscle, and nerve function, as significant imbalances can lead to serious complications.