Potassium is an electrolyte that is vital to cell metabolism. It helps transport nutrients into cells and removes waste products out of cells. It is also important in muscle function, helping to transmit messages between nerves and muscles. This test measures the amount of potassium in the blood and/or urine.
Potassium levels may be ordered when people undergo a routine medical exam or when they are being evaluated for a serious illness, such as kidney disease. Potassium testing may be ordered at regular intervals when a healthcare practitioner is diagnosing and evaluating hypertension, diabetic ketoacidosis, and kidney disease and when monitoring a patient receiving dialysis, diuretic therapy, or intravenous fluids.
Fasting Required: No
CPT Code: 84132
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