Among the possible tests to diagnose polyuria are:
symptom of Autosomal recessive polycystic kidney disease
symptom of Renal papillary necrosis
symptom of Dubin–Johnson syndrome
symptoms of Congenital adrenal hyperplasia
symptom of Syndrome of inappropriate antidiuretic hormone secretion
symptom of Kidney cancer
symptom of Phenylketonuria
symptom of Achondroplasia