Table 1

Accuracy and Precision of the CTC detection method
Expected CTC count N N Observed CTC count % Recovery
donors samples Mean SD 95% CI Mean SD 95% CI % CV
10 2 6 8 2.4 6–10 80 24 55–105 30
30 3 8 25 3 22–27 82 10 74–90 12
85 3 8 76 14 65–88 90 16 76–104 18
185 2 6 151 18 131–171 82 10 71–92 12
TOTAL 5 28 84 15 78–90 18

Observed vs. expected numbers of CTCs and recovery measured in blood samples of 5 healthy donors spiked with defined numbers of HCC1937 tumor cells.SD = standard deviation, CI = confidence interval of the mean, CV = coefficient of variation (SD/mean).

Weissenstein et al.

Weissenstein et al. BMC Cancer 2012 12:206   doi:10.1186/1471-2407-12-206

Open Data