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CPT Code(s)



Ion Selective Electrode (ISE)

Reference Range(s)

≤1 Week3.2-5.5 mmol/L
8-27 Days3.4-6.0 mmol/L
1-5 Months3.5-5.6 mmol/L
6 Months-1 Year3.5-6.1 mmol/L
2-19 Years3.8-5.1 mmol/L
≥20 years3.5-5.3 mmol/L

Clinical Significance

Potassium measurements are useful in monitoring electrolyte balance in the diagnosis and treatment of disease conditions characterized by low or high blood potassium levels. Potassium is elevated in adrenal cortical insufficiency, acute renal failure and in some cases of diabetic acidosis. Potassium is decreased in diuretic administration and renal tubular acidosis.

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