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. 2022 May 9;3(2):101373. doi: 10.1016/j.xpro.2022.101373

Input and IP dilution factors


Input dilution factor relative to IP
Input and IP individual dilution factors at each step
Step Input IP Input IP
RNA extraction starting material ×0.1 1 ×0.1 ×1
RNA extraction final volume ×1.212 1 ×1.212 ×1
DNase TBD, maximum is ×0.991 (max = 26 μL of RNA samples = 86.67% of total volume) 1 (87.5% of total volume of RNA sample) Max × 0.867 ×0.875
RT ×0.105 (10% of DNase; 3 μL) 1 (95.71% of DNase) ×0.1 ×0.957
qPCR ×0.06 (50-fold) 1 (3-fold) ×0.02 ×0.33
plate 1 (5 μL/25 μL total, per well) 1 (5 μL/25 μL total, per well) ×1 ×1
“Total dilution factor” ×0.00076 (7.6 × 10-4) 1 ×0.00021 ×0.276
IN/IP relative dilution factor ×0.00076 (7.6 × 10-4) ×0.00076052219 (7.6 × 10-4)

For each IP, we use 0.00076-times less input (0.076%). Thus, the IP/IN ratio must be multiplied by 0.00076 ([IP value] × 1)/([input value] × 7.6 × 10-4)]