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. 2009 Dec 1;102(2):276–284. doi: 10.1038/sj.bjc.6605472

Table 4. Comparison of positivity rates for CTC detection in MBC.

Reference Method Volume (ml) No. of patients No. of samples Positivity rate (% of samples)
Allard et al (2004) CellSearch 7.5 422 1316 37a
Cristofanilli et al (2004) CellSearch 7.5 177 NA 61a
Zieglschmid et al (2007a) AdnaGen 2 × 5 48 NA 69
Aktas et al (2009) AdnaGen 2 × 5 39 226 31

Abbreviation: NA=not applicable.

a

Positivity rate defined as 2 or more CTC per 7.5 ml peripheral blood.