Table 2.

The MM CTC assay is reproducible across titration points. Inter-assay variability was calculated from data for each titration point across the three runs. High consistency between assay runs (low inter-assay variability, % CV<20) was demonstrated for most data points. High % CV for n = 1 and 10 was expected due to high variability for detecting low number of cells.

Expected	Mean	St dev	% CV	Range
1	1	0.8	107.2	0–2
10	7	2.4	34.3	3–10
100	59	7.3	12.3	49–72
1000	964	36.5	3.8	909–1019