Digital PCR (dPCR) is an advanced nucleic acid quantification technology used to detect and measure DNA or RNA with very high precision through absolute quantification, without the need for standard curves. Unlike real-time quantitative PCR (qPCR), digital PCR works by partitioning a sample into thousands to millions of independent microreactions, where each partition contains zero, one, or more target molecules. After amplification, the number of positive and negative partitions is analyzed using Poisson statistics to determine the absolute concentration of the target sequence.
Peer-reviewed scientific literature has demonstrated that digital PCR provides superior sensitivity, excellent reproducibility, and improved tolerance to inhibitors commonly found in complex biological samples. It is particularly valuable for detecting rare mutations, measuring copy number variation (CNV), quantifying low-level viral loads, analyzing circulating tumor DNA (ctDNA), and supporting high-accuracy molecular diagnostics.
Because of its analytical precision and robustness, digital PCR has become an important platform in biomedical research, clinical diagnostics, biotechnology, and translational medicine.
Importance of Digital PCR
Digital PCR helps to:
- Provide absolute quantification of DNA or RNA targets
- Detect rare mutations with high sensitivity
- Improve precision compared with conventional qPCR
- Deliver excellent inter-run reproducibility
- Tolerate inhibitors in difficult sample matrices
- Measure gene copy number variation (CNV)
- Analyze circulating tumor DNA and liquid biopsy samples
- Improve confidence in molecular diagnostic results
Applications
Digital PCR is widely used in:
- Molecular oncology and liquid biopsy
- Rare mutation detection
- Viral load monitoring
- Gene expression studies
- Copy number variation analysis
- Biopharmaceutical quality control
- GMO and food safety testing
- Academic and translational research
