What is Real-Time PCR?

When speaking with food safety managers trying to upgrade their testing methods, we are often asked —what is real-time PCR? How does it work? The quick answer is: PCR (or polymerase chain reaction, for those science nerds out there) is a technique for multiplying a specific strand of DNA or RNA millions of times by manipulating the cell’s natural machinery. Once multiplied or amplified, the target DNA can readily be detected though a variety of methods.