Serum potassium is the gold standard test for the diagnosis of<unk> . Pseudohyperkalemia needs to be ruled out whenever<unk>  is diagnosed. Pseudohyperkalemia is defined when serum potassium concentration exceeds that of plasma. Different etiologies of<unk>  can be assessed by using the diagnostic criteria.
Hyperkalemia diagnostic study of choice
Hyponatremia diagnostic study of choice
Metabolic alkalosis diagnostic study of choice
Hypercalcemia diagnostic study of choice
Hyperkalemia differential diagnosis
Hyponatremia other diagnostic studies
Renal tubular acidosis diagnostic study of choice
Metabolic alkalosis other diagnostic studies