Table 4 Reference limits and their confidence intervals for biochemical analytes; n indicates the number of reference individuals after the removal of outliers, CI width ratio describes the width of the lower and upper reference limit in comparison to the width of the RIs

4.0–5.7

3.9–4.1

5.5–5.8

0.1 / 0.2

3.2–6.4

3.0–3.5

6.0–6.7

0.2 / 0.2

79.6–141.4

79.6–88.4

132.6–141.4

0.1 / 0.1

54.4–72.9

53.1–55.5

71.4–75.1

0.1 / 0.2

27.7–36.8

27.3–28.5

35.4–37.2

0.1 / 0.2

8.1–21.1

7.5–9.7

20.2–22.4

0.2 / 0.2

2.7–5.5

2.6–2.9

5.1–5.6

0.1 / 0.1

0.03–0.44

0.01–0.06

0.38–0.47

0.1 / 0.2

1.75–2.90

1.68–1.81

2.77–3.00

0.1 / 0.2

1.35–3.55

1.28–1.52

3.45–3.67

0.1 / 0.1

(81–213)

(77–91)

(207–220)

4.52–8.80

3.85–4.82

8.15–8.87

0.2 / 0.2

(271–528)

(231–289)

(489–532)

0.01–0.15

0.0–0.02

0.15–0.17

0.1 / 0.1

(0.5–9.0)

(0.0–1.0)

(9.0–10.0)

0.0–0.18

0.0–0.002

0.16–0.19

0.0 / 0.2

(0.0–10.7)

(0.0–0.1)

(9.4–11.5)

0.11–0.39

0.06–0.14

0.36–0.40

0.2 / 0.1

(6.6–23.6)

(3.3–8.2)

(21.4–23,8)

0.43–1.12

0.38–0.47

1.07–1.15

0.1 / 0.1

(26–67)

(23–28)

(64–69)

2.53–6.52

2.28–2.72

5.92–6.57

0.1 / 0.2

(152–391)

(137–163)

(355–394)

3.32–7.95

2.80–3.70

7.65–8.17

0.2 / 0.1

(199–477)

(168–222)

(459–490)

16.4–39.9

14.7–21.7

38.0–41.4

0.3 / 0.1

2.69–3.19

2.65–2.73

3.16–3.25

0.2 / 0.2

0.5–1.3

0.4–0.6

1.3–1.5

0.3 / 0.3

0.6–0.9

0.6–0.6

0.9–0.9

0.0 / 0.0

134–141

134–135

140–141

0.2 / 0.2

3.6–4.7

3.5–3.6

4.6–4.8

0.1 / 0.2

100–105

100–100

105–105

0.0 / 0.0