Archer Readiness Assessment 2025 – 400 Free Practice Questions to Pass the Exam

The normal range of potassium levels in the blood, measured in milliequivalents per liter (mEq/L), is typically between 3.5 and 5.0. This range is considered critical for maintaining proper physiological functions, particularly in muscle and nerve cells where potassium plays an essential role in electrical activity and signaling.

Maintaining potassium within this range is vital because both low levels (hypokalemia) and high levels (hyperkalemia) can lead to serious health complications, including cardiac arrhythmias and muscle weakness. The body regulates potassium levels using various mechanisms, including dietary intake, renal function, and cellular uptake.

The other provided ranges do not reflect the accepted normal values for potassium in the bloodstream, as they fall outside of the typical parameters established by clinical guidelines and medical literature. Therefore, the provided correct option reflects established medical standards, ensuring that any assessment or diagnosis related to potassium levels is founded on accurate and up-to-date information.