qPCR mastermix is a pre-prepared solution designed for quantitative PCR (qPCR) experiments, containing all the essential components needed for amplification and detection. It typically includes DNA polymerase, dNTPs, primers, a buffer, magnesium ions, and a fluorescent dye or probe for real-time monitoring of DNA amplification. This mastermix simplifies the setup of qPCR reactions and ensures consistency across samples.