text: Urine pH is the gold standard test for the diagnosis of<unk><unk><unk> .
option_0: Renal tubular acidosis diagnostic study of choice
option_1: Milk-alkali syndrome diagnostic study of choice
option_2: Metabolic alkalosis diagnostic study of choice
option_3: Hyperkalemia diagnostic study of choice
option_4: Glucose-6-phosphate dehydrogenase deficiency diagnostic study of choice
option_5: Bartter syndrome other diagnostic studies
option_6: Metabolic alkalosis other diagnostic studies
option_7: Lactic acidosis differential diagnosis