Digital PCR is not merely an incremental improvement over qPCR; it is a fundamentally more robust method for absolute quantification. The protocols outlined above demonstrate that while dPCR requires careful partitioning and Poisson-based statistics, its advantages—insensitivity to inhibitors, superior precision, and lack of standard curves—make it indispensable for clinical diagnostics, liquid biopsy, and virology.
For decades, real-time quantitative PCR (qPCR) has been the gold standard for measuring nucleic acid concentrations. However, qPCR relies on standard curves and cycle threshold (Ct) values, making it inherently relative and susceptible to amplification efficiency variations. Enter – a revolutionary refinement of traditional PCR that delivers absolute, direct quantification without the need for standard curves. Digital PCR- Methods and Protocols