One should choose PCR or qPCR based on the type of experiment being carried out. qPCR allows researchers to monitor the amplification of target DNA in real-time, providing continuous data on the progress of the reaction. In contrast, traditional PCR, while still effective for amplifying DNA, does not offer real-time monitoring. Thus, if an experiment requires researchers to monitor the amplification of target DNA in real time, qPCR should be used instead of standard PCR. Additionally, qPCR has a broader range of detection compared to traditional PCR. It can detect a wide range of DNA amounts, from just a single copy to billions of copies, all within a single experiment. Thus, if the experiment requires accurate quantification of target molecules or detection of low-abundance targets, qPCR is the better choice. qPCR is also faster than traditional PCR.