Skip to main content
. Author manuscript; available in PMC: 2014 Feb 19.
Published in final edited form as: Anal Chem. 2013 Feb 6;85(4):2465–2471. doi: 10.1021/ac400193b

Figure 4.

Figure 4

Clinical results from the CTC flow counting system and CellSearch. Our method found a median of 90 CTCs per 7.5 mL of blood compared to a median of zero for the CellSearch system. The black dashed line is a simple threshold (38 counts/7.5 mL) set based on the range of detected CTCs in healthy donors. The magenta dashed line is the threshold (33 counts/7.5 mL) set using the mean background level plus two times of its standard deviation. The blue dashed line is the threshold (63 counts/7.5 mL) determined by Z-test with a 95% confidence level.