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What is the Difference Between RT-PCR and Real-Time PCR?

The RT-PCR Test machine cycles through temperatures and chemical reactions that create new copies of viral DNA. The RT-PCR cycle is repeated over. Each cycle doubles the previous number. Typically, the machine goes through 35 processes, creating 35 billion new copies of viral DNA. While RT-PCR can detect tiny amounts of RNA, it is less sensitive and can be used to detect vast quantities of DNA.

RT-PCR is often used to research and diagnose respiratory viruses, but real-time PCR is becoming increasingly helpful in screening human samples in clinical settings. For example, real-time RT-PCR can detect the Covid-19 virus, enabling the rapid testing of large herds near outbreak boundaries. However, unlike RT-PCR, this method is not recommended for use in high-throughput diagnostics.

Is RT-PCR a Gene Detection



RT-PCR is a gene detection method that monitors DNA amplification in real-time. RT-PCR is also known as quantitative PCR. In this process, a portion of the viral DNA has amplified hundreds of thousands of times to determine its presence in the sample. Consequently, RT-PCR and real-time qPCR are often used for different applications.

While RT-PCR is more common, real-time qPCR is more precise and accurate. qPCR measures the amplification as it occurs, while RT-PCR only starts the amplification. In this way, it is possible to detect different levels of DNA in a sample in a shorter amount of time than RT-PCR. It also allows researchers to perform multiple amplification experiments in the same model simultaneously, making it a more powerful tool in many applications.

Reverse Transcription

RT-qPCR uses the reverse transcription of cDNA to detect viral DNA. This is done because qPCR is more accurate than RT-PCR and can measure the amount of amplification in a single sample. The difference between qPCR and RT-PCR is significant in many cases, but there are several differences between the two types of amplification.

In RT-PCR, the amplification of DNA takes place in real-time, while real-time qPCR uses both methods. The first step is called RT-qPCR and is used to detect changes in gene expression. It is more accurate than RT-PCR and combines both approaches. There are other differences between the two technologies. This article will explain how they differ.

Real Time Amplification

RT-PCR test combines the qPCR process with real-time amplification. This amplification can detect the COVID-19 virus, which is present in RNA. Using RT-qPCR, scientists convert the RNA into DNA. Only DNA can be copied and amplified. This enables them to confirm whether the virus is present in a sample.

qPCR has a limit of detection, and RT-PCR test is a quantitative qPCR. For instance, it aims to detect the presence of the COVID-19 virus. Using RT-qPCR, scientists first convert COVID-19 virus RNA into DNA, which can be replicated and amplified. With amplification, scientists can verify the presence of the virus.

Gene Expression

RT-qPCR combines qPCR and RT-PCR. Both techniques can detect changes in gene expression. In a real-time RT-PCR, RNA is transformed into DNA. Then, the scientist amplifies a specific part of the viral DNA hundreds of thousands of times. The resulting product is an accurate and highly reproducible replica of the virus.


RT-qPCR is a quantitative PCR that uses RNA as a template for the amplification reaction. Compared to qPCR, RT-qPCR is faster. In real-time PCR, fluorescence signals the progress of the amplification reaction. The results are displayed on a computer screen. You can then analyze the results in various ways.

Final Thoughts

RT-qPCR uses fluorescent dyes to visualize the amplified DNA fragments in real-time. While RT-qPCR requires a more complicated procedure, it is the only one that can detect transcripts at deficient levels of dsDNA. It is also more sensitive and can detect lower transcript levels. The competitive RT-qPCR method is more commonly used in diagnostic and biochemical tests, while RT-qPCR does not require any other probe type.

Cate Blanchett

I’m Cate Blanchett, one of the Canada's most experienced online marketing consultant. I’m an acknowledged online marketer and have helped hundreds of businesses. I worked on alot of categories like healthcare etc which are very helpful for you. _

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