Normal Subjects

Range

Euthyroid Sick Syndrome

Central Hypothyroidism

Age (Years)

48 ± 4.8

25 - 71

50 ± 3.6

47 ± 4.4

Free T4 (ug/dl)

1.26 ± 0.15

0.89 - 1.70

0.82 ± 0.02

0.85 ± 0.02

Free T3 (ng/dl)

3.5 ± 0.32

2.3 - 4.2

2.61 ± 0.23

3.05 ± 0.18

TSH (uU/ml)

3.1 ± 0.42

0.45 - 4.67

1.67 ± 0.38

1.21 ± 0.50

Reverse T3 (ng/dl)

17.6 ± 2.3

11 – 26

23.81 ± 1.2

8.78 ± 0.55*