Table 2. Diagnostic values of CTC count from both methods at selected CTC cutoff points.

Biomarker	Cutoff point	Sensitivity	Specificity	Likelihood ratio
CTC counts 84-1 method	> 1	100%	61.1%	2.571
	> 2	77.93%	88.89%	8.4
	> 5	93.33%	94.4%	16.8
CTC counts CellSearch method	> 1	80%	77.78%	3.6
	> 2	60%	77.78%	2.7
	> 5	46.67%	83.33%	2.8