MBI030 - POTASSIUM, SERUM Detail

Potassium (K⁺) is a major intracellular electrolyte essential for normal cellular function, particularly in maintaining membrane potential, nerve impulse transmission, muscle contraction, and cardiac rhythm. The potassium test measures the concentration of potassium ions in blood and is commonly performed using the ion selective electrode (ISE) method. It is routinely used to evaluate electrolyte balance, renal function, and acid–base status, and to monitor patients with kidney disease, cardiac disorders, and those receiving diuretics or electrolyte therapy. Abnormal potassium levels can significantly affect neuromuscular and cardiac activity and may be associated with conditions such as renal impairment, dehydration, endocrine disorders, tissue breakdown, or excessive loss through gastrointestinal routes. Accurate measurement of potassium is critical, especially in emergency and intensive care settings, due to its direct impact on heart function.