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Table 1 Sample experimental data from a single qPCR plate for analysis. Hypothetical data are used to show the results of a plate experiment examining the expression of a gene of interest (g) and two reference genes (ref1 and ref2) for two sample types, A and B. The controls for the plate experiment are not shown. \( Mean{C}_q^{(w)} \) represents the the arithmetic \( Mean{C}_q^{(w)} \) across the three technical replicates

From: A common base method for analysis of qPCR data and the application of simple blocking in qPCR experiments

 

Well efficiency (E)

Gene

C q

log(E)

log(E) ∙ C q

\( Mean{C}_q^{(w)} \)

Sample type A

1.844

g

31.246

0.266

8.303

8.397

Sample type A

1.843

g

31.490

0.265

8.360

 

Sample type A

1.836

g

32.316

0.264

8.527

 

Sample type B

1.839

g

32.565

0.265

8.647

8.611

Sample type B

1.834

g

32.782

0.263

8.631

 

Sample type B

1.823

g

32.802

0.261

8.555

 

Sample type A

1.905

ref1

26.645

0.280

7.458

7.336

Sample type A

1.886

ref1

26.618

0.276

7.335

 

Sample type A

1.868

ref1

26.579

0.271

7.215

 

Sample type B

1.918

ref1

26.101

0.283

7.382

7.353

Sample type B

1.906

ref1

26.096

0.280

7.309

 

Sample type B

1.915

ref1

26.105

0.282

7.368

 

Sample type A

1.900

ref2

26.191

0.279

7.298

7.180

Sample type A

1.881

ref2

25.983

0.274

7.129

 

Sample type A

1.879

ref2

25.962

0.274

7.113

 

Sample type B

1.890

ref2

25.308

0.277

6.998

7.054

Sample type B

1.883

ref2

25.256

0.275

6.940

 

Sample type B

1.911

ref2

25.689

0.281

7.223

 
     

Sample type A Efficiency-weighted ΔC q

\( {\Delta C}_{q;r,A}^{(w)}= \)1.1387

     

Sample type B Efficiency-weighted ΔC q

\( {\Delta C}_{q;r,B}^{(w)}= \)1.4077