Hypovolemia (n = 4) Value (range min-max) 

Euvolemia (n = 4) Value (range min-max) 

p-value 

Age (years)

76 (63 - 88)

80 (70 - 86)

0.564

Gender (female) 

4

 2

0.105

BP systolic (mmHg)

145 (130 - 169) 

158 (150 - 200)

0.191

BP diastolic (mmHg)

76 (70 - 80) 

103 (74 - 110)

0.081

Heart rate (beats/min)

79 (60 - 92) 

79 (70 - 87)

1.000

TSH (mU/L)

1.3 (1 - 4) 

1.4 (1.0 - 37.0)

0.663

T4 (mU/L)

15 (12 - 18) 

20 (2 - 27)

0.309

T3 (mU/L)

3.7 (3 - 5) 

3.4 (1 - 4)

0.564

Cortisol (mmol/L)

421 (191 - 821) 

540 (283 - 582)

0.564

ACTH (pmol/L) 

3.6 (2 - 12) 

5.1 (3 - 15)

0.289

Hb (g/L) 

122 (102 - 164) 

140 (128 - 142)

0.386

Potassium (mmol/L) 

3.9 (2.9 - 4.5) 

4.2 (4.0 - 4.5)

0.189

Creatinine (μmol/L)

101 (52 - 153) 

69 (45 - 92)

0.248

Glucose (mmol/L)

6.0 (5 - 13) 

6.5 (5.8 - 8.0)

0.564

CRP (mg/L)

3 (1 - 6) 

2 (1 - 5) 

0.663

P-osm (mOsm/kg)

263 (261 - 288

251 (237 - 277)

0.146

U-osm (mOsm/kg)

236 (204 - 269)

537 (290 - 600)

0.021

U-Na (mmol/L)

24 (20 - 34)

82 (44 - 149)

0.020

U-K (mmol/L)

24 (23 - 36)

31 (19 - 46)

0.724

U-Methoxynorepinephrine/creatinine

291 (191 - 430) 

199 (168 - 674)

 0.386

U-Methoxyepinephrine/creatinine

104 (54 - 219) 

141 (111 - 211)

 0.564