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Table 3 Repeatability of PSA and biochemical bone turnover markers

From: Repeatability of quantitative parameters of 18F-fluoride PET/CT and biochemical tumour and specific bone remodelling markers in prostate cancer bone metastases

Patients’ ID

PSA (μg/L)

ALP (μg/L)

S-osteocalcin (μg/L)

S-beta-CTx (ng/mL)

1CTP (ng/mL)

BAP (U/L)

Scan

1

2

1

2

1

2

1

2

1

2

1

2

1

67

64

1.6

1.3

13

13

96

93

7.0

7.1

21

21

2

0.4

0.4

1.1

1.2

6.5

7.4

248

280

3

15

15

1.5

1.6

23

21

784

781

7.4

7.7

22

22

4

0.8

1

0.6

0.56

13

12

87

97

5.8

6.8

7.7

7.2

5

35

37

1.4

1.6

6.2

5.2

101

104

5.0

5.6

32

29

6

106

98

2.9

2.8

32

33

100

104

8.7

8.3

66

72

7

884

799

1.3

1.5

6.6

7.4

106

101

9.2

8.9

14

14

8

157

140

1.3

1.4

17

18

103

101

8.7

7.5

23

22

9

28

27

1.4

1.5

8.3

8.2

32

24

3.6

3.4

22

22

10

120

123

3.5

3.1

7.0

7

43

42

4.5

4.3

56

40

Mean

141 ± 266

130 ± 240

1.7 ± 0.9

1.7 ± 0.7

13.3 ± 8.6

13.2 ± 8.6

170 ± 223

173 ± 224

6.7 ± 2.0

6.6 ± 1.8

29 ± 19

28 ± 19

CC

1.0 (95% CI 1.0–1.0) p < 0.001

0.98 (95% CI 0.91–1.0) p < 0.001

0.99 (95% CI 0.97–1.0) p < 0.001

0.99 (95% CI 0.99–1.0) p < 0.001

0.95 (95% CI 0.78–0.99) p < 0.001

0.95 (95% CI 0.78–0.99) p < 0.001

CR absolute

53

0.41

2.0

23.0

1.26

11.8

CR (%)

19%

23%

18%

22%

18%

23%

  1. CC Pearson correlation coefficient, CI confidence interval, CR coefficient of repeatability