Serum calcium levels is the study of<unk>  for the diagnosis of<unk> . However, a panel of tests may be required to reach the underlying cause of<unk> .
Hypercalcemia diagnostic study of choice
Hyperkalemia diagnostic study of choice
Hypercalcemia echocardiography or ultrasound
Hyponatremia diagnostic study of choice
Metabolic acidosis differential diagnosis
Hyperkalemia differential diagnosis
Hypocalcemia differential diagnosis
Adrenal insufficiency diagnostic study of choice