Diabetes Insipidus - Diagnosis Algorithm Tests: • Osmolality, Urine AND/OR • Osmolality, Serum or Plasma AND • Sodium, Plasma or Serum • Water deprivation test and Osmolality (Serum or Plasma) • Administer vasopressin + Osmolality, Urine 1-2 hrs post administration • Arginine Vasopressin Hormone ARUPConsult @ARUPLabs #Diabetes #Insipidus #Diagnosis #Algorithm #nephrology #differential