What is digital PCR?
Digital PCR is a technique where the sample containing template DNA is diluted to the point such that aliquoting the diluted sample into multiple reaction chambers (wells/tubes/etc) results in 50% or more of the chambers not receiving the template DNA of interest (figure 1)(see ORIGINS in reference section below). For instance, setting up PCR reactions in a 96-well plate. Using sheared genomic DNA, each well gets 0,1, or more potential DNA fragments. Each fragment represents a single gene loci (red, blue, green, black).