The diagnosis of diabetes insipidus can be confirmed by continued hypotonic polyuria in the presence of hypernatremia and/or hyperosmolality. [8] Measurement of urine osmolality or specific ...

Biochemical evaluation was relevant for low urine osmolality and a 24-hour urine volume of 10,350 mL. Basal anterior pituitary evaluation was normal. A water deprivation test was started and ...