Figure 5

Comparison of extracted cfDNA concentration in qPCR assay. cfDNA concentration in a plasma sample was compared according to extraction methods, QIAamp and PIBEX. cfDNA amount in plasma sample was quantified by qPCR in four reference genes, TERT, RPPH1, GAPDH, and NAGK, in (a). The error bar represents standard deviation of triplex qPCR assay in a sample. The relative efficiency of cfDNA extraction in PIBEX was derived based on QIAamp in (b). The error bar is standard deviation of samples (n = 7).