Fig. 2From: Report: central diabetes insipidus and schwannoma in a male with X-linked congenital adrenal hypoplasiaWater deprivation test results (a). Vasopressin challenge test results (b). There was no change in urine osmolality during the water deprivation test, while a greater than fivefold increase in urine osmolality was observed after administration of vasopressinBack to article page