Osmotic diuresis
Hyperglycemia
Mannitol
Drugs: diuretics, caffeine, acetazolamide, lithium
Hypercalcemia
Hypokalemia
Diabetes insipidus
Cushing's syndrome, primary hyperaldosteronism
Inability to concentrate urine (e.g. chronic pyelonephritis, sickle cell disease, amyloidosis<unk> 
Early renal failure
High fluid intake
Excess IVF
Psychogenic polydipsia
Hyperglycemia
Mannitol
Excess IVF
Psychogenic polydipsia
Post-obstructive diuresis
Osmotic diuresis
Contrast-induced nephropathy
Hyperglycemia
Dialysis-associated hypotension
Mannitol
Dehydration 
Drugs: diuretics, caffeine, acetazolamide, lithium