Potassium Serum Adult: 3.5-5.1 mEq/ L Child: 3.4-4.7 mEq/L Infant: 4.1-5.3 mEq/L Newborn: 3.7-5.9 mEq/L Premature (48 hours): 3.0-6.0 mEq/L To evaluate electrolyte balance, acid-base balance, Hypertension, renal disease or renal failure, and endocrine disease. To monitor the patient receiving treatment for ketoacidosis as well as those receiving hyperalimentation, dialysis, diuretic therapy, intravenous therapy Rapid or excessive intravenous potassium replacement Massive hemolysis Acidosis Dehydration Diabetic ketoacidosis Acute renal failure Traumatic crushing injury Chronic renal failure Severe burns Potassium-sparing diuretics Addison's Disease Diuretic therapy Excessive sweating Intravenous fluid therapy without potassium replacement Fisutlar drainage Bartter's syndrome Vomiting or Diarrhea Alkalosis Severe burns Aldosteronism Renal tubular acidosis Hemolysis