Table.

Laboratory Values

Test	Reference	On admission	8 h after admission	12 h after admission	16 h after admission
Sodium	137-145 mmol/L	124	130	139	142
Potassium	3.5-5.1 mmol/L	3.7	4.2
Chloride	98-107 mmol/L	87	96
Bicarbonate	19-27 mmol/L	22	23
Blood urea nitrogen	7-26 mg/dL	7	5
Creatinine	0.50-0.95 mg/dL	0.63	0.59
Glucose	75-100 mg/dL	101	99
TSH	0.41-4.81 mIU/L	2.48
Free T4	0.83-1.90 ng/dL	0.86
Cortisol	2.5-19.5 ug/dL	9.4
Hemoglobin	11.2-14.7 g/dL	11	12.3
Hematocrit	33.8-43.3 %	32.1	35.8
Urine specific gravity	1.015
Serum osmolality	275-295 mOsm/kg		269
Urine osmolality	50-1200 mOsm/kg		85
Urine Na	mmol/L		<20
Urine K	mmol/L		<3
Urine Cl	mmol/L		<20
Urine Cr	mg/dL		7.1

Abbreviations: Cl = chloride; Cr = creatinine; K = potassium; Na = sodium; TSH = thyroid stimulating hormone; T4 = thyroxine.