Concurrent Central Diabetes Insipidus and Acute Myeloid Leukemia

Table 1

Laboratory data.

Laboratory testing at diagnosis
Assay	Result	Normal values
WBC	2.3 K/μL	3.8–10.5 K/μL
Hb	13.5 g/dL	13.6–17.2 g/dL
MCV	101 fL	80–97 fL
24-hour urine collection	12.5 L urine output	0.8–2.0 L
Prolactin	8.9 ng/mL	3.5–19.4 ng/mL
Cortisol (AM)	18.6 μg/dL	10–20 μg/dL
Free T4	0.81 ng/L	0.70–1.48 ng/L
Total testosterone	338 ng/dL	300–720 ng/dL
8-hour water deprivation test
Assay	0 hours	8 hours	Normal values
Serum sodium	144 mmol/L	149 mmol/L	136–145 mmol/L
Serum osmolality	302 mOsm/kg	308 mOsm/kg	278–298 mOsm/kg
Urine osmolality	123 mOsm/kg	235 mOsm/kg	50–1200 mOsm/kg
Desmopressin challenge
Time	Urine output (mL)	Urine osmolality (mOsm/kg)
12-1 PM	725	87
1 PM	2 mcg DDAVP SubQ
1-2 PM	160	341
2-3 PM	80	467