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Table 1 Overview of the reported baseline blood concentrations of CNP and NT-proCNP (mean ± SD)

From: Comparative measurement of CNP and NT-proCNP in human blood samples: a methodological evaluation

Author, year

Age

n

Subgroup

CNP (pg/ml)

NT-proCNP (pg/ml)

    

Serum

Plasma

Serum

Plasma

Del Ry, 2012 [11]

0-3d

41

newborns

 

11.6 ± 2.1*R

  

4-30d

24

newborns

 

16.4 ± 3.7*R

  

1-12 m

22

infants

 

15.4 ± 2.7*R

  

1-12

32

childrens

 

13.6 ± 2.3*R

  

64 ± 1

32

healthy adults

 

7.4 ± 1.0*R

  

Del Ry, 2011 [10]

64 ± 1

130

heart failure

 

7.86 ± 0.41*R

 

67.1 ± 7.36

63 ± 2

19

diabetes

 

8.70 ± 1.62*R

 

51.5 ± 5.75

52 ± 1

24

liver cirrhosis

 

4.97 ± 0.55*R

 

78.4 ± 19.9

61 ± 2

73

healthy

 

2.35 ± 0.11*R

 

45.5 ± 1.84

Olewicz-Gawlik, 2010 [17]

60 ± 15

40

RA

  

105 ± 189

 

30

healthy

  

50 ± 35

 

Vlachopoulos, 2009 [21]

57 ± 10

52

erectile dysfunction

   

2.28 ± 0.87

matched

31

healthy

   

3.70 ± 0.76

Palmer, 2009 [19]

64 ± 9

120

cardiovascular disease

 

1.43*R,a

 

187.0a

Dietmann, 2008 [14]

0.8-3.6

50

Malaria, severe

   

120 ± 72

0.8-2.0

39

Malaria, uncomplicated healthy

   

125.0 ± 49

25

0.8-6.4

155 ± 70

Yagci, 2008 [22]

34 ± 6

26

healthy

800 ± 270E

   

34 ± 9

28

Behcet, active

490 ± 120E

   

25

Behcet, inactive

650 ± 200E

   

Del Ry, 2007 [12]

62 ± 2

51

ILVD

 

7.0 ± 0.9*R

  

61 ± 2

60

healthy

 

2.5 ± 0.12*R

  

Olney, 2007 [18]

13 ± 2

10

GHD baseline

   

339 ± 40

GHD under therapy

   

622 ± 157

14 ± 1

11

healthy

   

432 ± 64

Lupattelli, 2006 [16]

35-60

44

Hyperlipidemia

 

4100 ± 5800*E

  

matched

20

healthy controls

 

5700 ± 3300*E

  

Del Ry, 2005 [13]

61 ± 2

21

healthy

 

2.7 ± 0.2*R

  

Prickett, 2001 [20]

33 - 91

22

heart failure

   

105 ± 5.4

25 - 55

16

healthy

   

80 ± 3.2

Gülberg, 2000 [15]

57 ± 2

20

liver cirrhosis, RI

 

2.7 ± 0.4*R

  

52 ± 2

20

liver cirrhosis, no RI

 

3.0 ± 0.2*R

  

45 ± 6

11

healthy

 

4.2 ± 0.4*R

  

present study

29 ± 2

12

healthy

997 ± 379E

991 ± 489*E

58.5 ± 28.3

60.3 ± 23.9

     

1933 ± 699°E

  
  1. At baseline, CNP concentrations are measured in blood samples anticoagulated either with EDTA(*) or sodium-citrate (°). Concentration of CNP was measured either with RIA-assay (R) or ELISA-assay (E). Unless otherwise indicated (d = days, m = months), age is given in years. a = arterial blood sample, CVRF = cardiovascular risk factors, RA = rheumatoid arthritis, ILVD = idiopathic left ventricle dysfunction, RI = renal insufficiency, GHD = growth hormone deficiency.