Humic substances cause fluorescence inhibition in real-time PCR.
Real-time PCR (qPCR) is the cornerstone of DNA analysis, enabling detection and quantification of minute nucleic acid amounts. However, PCR-based analysis is limited, in part, by the presence of inhibitors in the samples. PCR inhibition has been viewed solely as failure to efficiently generate amplicons, i.e. amplification inhibition. Humic substances (HS) are well known inhibitors of PCR amplific