Table 5

Comparison of our fT3 reference intervals to previously published reference intervals (2.5, 50 and 97.5%) of different age groups.



Soldin et al., 1995 Abbott IMx®
Elmlinger et al., 2001 Immulite®
Hübner et al., 2002 Advia Centaur®
Kapelari et al., Advia Centaur®

Age




fT3

[pmol/L]
[pmol/L]
[pmol/L]
[pmol/L]


n = 1,069
n = 762
n = 460
n = 1,295


1 d – 7 d
2.2 – 7.4
2.76 – 6.91 – 11.67
2.32 – 8.11 a
F: 5.00 – 6.60 – 7.50

8 – 15 d
2.2 – 8.4
2.84 – 5.53 – 11.86
2.40 – 7.94 b
M: 4.60 – 6.30 – 10.10

15 d – 1 m

n.d.



1 – 12 m
3.1 – 10.6

2.72 – 5.27 – 7.30 c
F: 4.30 – 6.15 – 7.60





M: 4.30 – 6.20 – 7.50

1 – 2 y

3.28 – 6.08 – 11.06
3.05 – 5.63 – 6.93
F: 4.45 – 6.15 – 7.46

2 – 3 y



M: 4.70 – 6.30 – 7.84

3 – 4 y
3.7 – 10.3




4 – 5 y

3.43 – 6.57 – 10.97



5 – 6 y



F: 4.60 – 6.20 – 7.30

7 – 8
4.4 – 9.2
3.58 – 6.71 – 10.75
3.30 – 5.58 – 6.79
M: 4.80 – 6.10 – 7.20

9 – 10

3.72 – 6.44 – 10.87



11

3.76 – 6.13 – 9.98



12

3.76 – 5.88 – 8.86
3.46 – 5.54 – 6.7
F: 4.41 – 5.90 – 7.00

13
4.8 – 9.1
3.84 – 5.64 – 8.03

M: 4.90 – 6.00 – 7.00

14

3.81 – 5.45 – 7.28



15

3.69 – 5.16 – 6.87



16

3.61 – 4.98 – 6.88
3.57 – 5.33 – 6.65
F: 4.08 – 5.30 – 6.80

17
5.4 – 8.8
3.54 – 4.76 – 6.60

M: 4.60 – 5.80 – 7.10

18 – 19

3.52 – 4.65 – 6.30



a 1 d – 3 d

b 4 d – 30 d

c 61 d – 12 m

Kapelari et al. BMC Endocrine Disorders 2008 8:15   doi:10.1186/1472-6823-8-15