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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