CP and B-cell chronic lymphocytic leukemia: From the standard dilution series of 10 CLL assays, 0.04% (1/264) of the repeated standard measurements in the range of 10-1 to 10-4 showed a ΔCp ≥ ± 1.5 compared to the mean Cp determined during first analysis using the same DNA dilution and the same primer stock solution (Figure 3C).