Biomedical Basics

RT-PCR vs qPCR

  • Created by Henry Stewart Talks
Published on September 30, 2026   4 min

A selection of talks on Methods

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In this talk, we turn our attention to RTPCR versus QPCR, framing our discussion around key nucleic acid amplification techniques, RT PCR and QPCR, highlighting their principles and applications. We will explain how RTPCR converts RNA to CDNA for gene expression studies, while QPCR enables real time quantification of DNA amplification using fluorescent markers. The primary distinctions between these techniques, including endpoint versus real time analysis, and their roles in qualitative and quantitative assessment will be discussed. We will also explore their importance in medical diagnostics and research, as well as common technical challenges. When considering nucleic acid amplification, two key techniques are widely referenced, reverse transcription PCR or RT PCR and quantitative PCR, often called QPCR or real time PCR. RTPCR converts RNA into complementary DNA, known as CDNA, which is then amplified, allowing scientists to study gene expression from RNA samples. QPCR, in contrast, focuses on the real time measurement of DNA amplification. The comparison of these techniques begins with RT PCR. RT PCR begins with isolating RNA from a sample, then uses reverse transcriptase to synthesize CDNA from this RNA template. This step is essential for analyzing gene expression, as standard PCR only amplifies DNA.

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