Have you tested the effect of inhibitors on PCR performance?
FAQ ID -818

Yes. Please see Table 3 in our brochure Maximizing PCR and RT-PCR success. We tested the effects of different inhibitory substances in a number of PCR systems. We also analyzed the effect of including different volumes of reverse transcription (RT) reaction mixtures in PCR. Please see the table below for a list of commonly encountered template impurities and their inhibitory effects on PCR.


Impurities showing inhibitory effects on PCR

Substance Inhibitory concentration
SDS >0.005% (w/v)
Phenol >0.2% (v/v)
Ethanol >1% (v/v)
Isopropanol >1% (v/v)
Sodium Acetate ≥5 mM
Sodium Chloride ≥25 nM
EDTA ≥0.5 mM
Hemoglobin ≥1 mg/ml
Heparin ≥0.15 i.U./ml
Urea >20 mM
RT reaction mixture ≥15%