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Table 2 Comparison of reverse transcription (RT) and pre-amplification (PRE) variability

From: Pre-amplification in the context of high-throughput qPCR gene expression experiment

 

RND1

CD83

EIF3M

STK10

FKBP

AVG var.

Efficiency (E)

91%

100%

97%

94%

100%

 

Cq RT

31.7

25.6

24.6

22.1

20.2

 

\( S{D}_{\mathrm{RT}}=\sqrt{SD{(rt)}^2+SD{(qPCR)}^2} \)

0.38

0.41

0.24

0.40

0.29

 

Variability RT = (1 + E)SD RT

28%

33%

18%

17%

22%

23.6%

Cq PRE*

23.6

17.1

16.2

13.4

12.1

 

\( S{D}_{PRE}=\sqrt{SD{(pre)}^2+SD{(qPCR)}^2} \)

0.24

0.18

0.18

0.14

0.16

 

Variability PRE = (1 + E)SD PRE

17%

13%

13%

10%

12%

13%

Expression Differential

1.2

0.7

1.0

0.7

1.3

 
  1. *Equivalent of 5 ng of total RNA was used in 18 cycle pre-amplification, pre-amplified cDNA diluted 40x.