Polyuria

Causes

Appropriate Tests

 

Electrolytes, Glucose, Creatinine, Urea.

Osmolality, Osmolality urine (early morning). Water deprivation test, if appropriate.

Psychogenic polydipsia

See Polydipsia

Diabetes insipidus

 

Renal tubulo-interstitial disorders

 

Solute diuresis

  • Diabetes mellitus

 

Diuretic therapy

 

Renal failure - chronic