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Table 2 Limit of detection for two methylated markers in ColoDefense2.0

From: A simplified multiplex methylated DNA testing for early detection of colorectal cancer in stool DNA

SDC2

SEPT9

ACTB

CONC (pg/reaction)

PR (%)

Mean Ct

CONC (pg/reaction)

PR (%)

Mean Ct

CONC (pg/reaction)

PR rate (%)

Mean Ct

0

0

0

0

20,000

100

25.6 ± 0.1

50

100

35.8 ± 0.4

5000

100

27.3 ± 0.1

25

100

37.6 ± 0.9

2500

100

28.9 ± 0.1

12.5

75

38.6 ± 1.2

1250

100

29.8 ± 0.2

200

100

34.7 ± 0.2

20,000

100

25.7 ± 0.1

100

100

36.2 ± 0.5

10,000

100

26.8 ± 0.2

50

75

37.5 ± 0.8

5000

100

27.9 ± 0.2

  1. CONC concentration, PR positive rate