qRCP stands for "quantitative PCR" and is also often called "Real-Time PCR - RT-PCR". It is a molecular biological method in which DNA is not only amplified, as in PCR, but also measured in real time to determine how much DNA has been amplified. It is a fluorescence optical method. The more copies are made, the stronger the optical signal. The original amount of DNA or cDNA is measured using computer technology.
The qRCP detection method specifically measures the number of copies of a DNA section or how strongly a gene is expressed (e.g. measurement of viral load).