As powerful tools for quantitative nucleic acid analysis, both real-time PCR (qPCR) and digital PCR (dPCR) play a critical role in the discovery, development, and manufacture of biotherapeutics. Integrating qPCR and dPCR into your bioanalysis workflows imbues your process and product with enhanced reliability by enabling precise molecular insights for discovery and characterization through quality control and release testing. With application support ranging from gene expression and genetic variation analysis to transgene quantification and contamination testing, our qPCR and dPCR solutions provide the tools and services you need to help streamline workflows and simplify compliance.
While both qPCR and dPCR use similar fluorescent probe-based technology to quantify nucleic acid targets, key differences in quantification methods confer each tool with application-dependent benefits or limitations. Even in a single lab, there are often separate use cases for both qPCR and dPCR. We recommend choosing the best technology for each use case by considering absolute quantification necessity, target concentration, total sample number, and user preference.
qPCR is a well-established and reliable tool that measures nucleic acid target amplification against a reference for each PCR cycle, enabling analysis based on reaction kinetics. Because qPCR measures target amplification against a reference, it is often used for relative quantification. qPCR can also be used for absolute quantitation of targets but requires a standard curve of known reference concentration. Compared to dPCR, qPCR has the wider dynamic range, spanning approximately ten orders of magnitude. As a powerful tool for monitoring targets across a wide range of concentrations, qPCR is also capable of detecting down to a 1.5-fold change in target quantity.
For discovery-stage research, qPCR helps enable identification and screening of potential targets or therapeutic candidates via molecular interrogation of processes related to pathogen and disease biology. Thermo Fisher offers a comprehensive and integrated set of qPCR products for discovery research, empowering you to accelerate your investigations, generate reliable data, and contribute to the development of innovative biotherapeutic solutions. QuantStudio real-time instruments, TaqMan probe-based assays, and TaqMan master mixes work seamlessly together, providing a complete qPCR solution that simplifies experimental design to help save time and resources.
qPCR is a valuable tool in the development and production of biotherapeutics, providing critical information that can help ensure product safety, efficacy, and consistency. During process development, real-time PCR is used detect and quantify nucleic acid sequences to establish quality control specifications and monitor genetic identity and conformity. In subsequent pre-clinical and clinical research, qPCR can be used to determine the pharmacokinetics and pharmacodynamics or monitor subject response to a potential biotherapeutic. qPCR is also routinely used to help maintain consistency and stability during manufacturing and can be used during quality control testing to detect any potential contamination or deviations, allowing for prompt corrective actions to be taken.
Our qPCR portfolio offers a comprehensive solution for post-discovery biologic development and manufacturing. Designed to support cGMP-compliant workflows, high-quality TaqPath qPCR reagents and assays are backed by strong quality management systems and enhanced compliance documentation for ongoing regulatory support. QuantStudio qPCR instruments enable high-throughput, user-friendly, and automation-ready qPCR workflows that help improve consistency and speed by reducing error-prone manual tasks and making 24/7 operations possible. Our qPCR tools for post-discovery analysis are optimized to help fast-track your biologics manufacturing by maximizing uptime and workflow efficiency.
dPCR is a leading technology for the detection and quantification of rare mutations and nucleic acid sequences. dPCR works by dividing a bulk PCR reaction into thousands of microchambers, each containing zero, one, or just a few DNA molecules. Absolute target quantity is determined by applying Poisson statistics to the total number of positive and negative microchambers based on endpoint fluorescent signals, negating the need for a standard curve. By removing variability associated with standard curve quantification, dPCR offers greater precision for absolute quantification than qPCR, especially for low-level targets. Further, single-molecule interrogation enables identification and quantification of molecules containing multiple targets such as engineered plasmids.
With the ability to provide an absolute count of nucleic acid targets, dPCR is used in applications throughout biotherapeutic development and manufacturing, including vector copy number assessment, genomic titer, capsid ratio determination, and residual DNA testing. To help optimize dPCR workflows, the QuantStudio digital PCR system leverages our proprietary microfluidic array plate (MAP) technology to offer accuracy and consistency for absolute quantification. MAP technology offers significant benefits over droplet digital PCR (ddPCR) including reduced dead volume to help ensure maximum sensitivity. The simple workflow with fast time-to-answer helps enable reliable quantitative bioanalysis backed by our TaqMan Assay portfolio.
Automation of qPCR and dPCR workflows have revolutionized the field of bioanalysis, significantly improving the speed and efficiency of biotherapeutic development and manufacturing. By streamlining sample processing and downstream analysis, these technologies help reduce human error, increase throughput, enhance data accuracy, and improve reproducibility. The integration of automated sample preparation with high-throughput qPCR and dPCR provides researchers and manufacturers with valuable tools to accelerate the development and production of safe and effective biotherapeutic products.
Our qPCR and dPCR tools include high-throughput, user-friendly, and automation-ready instrumentation that helps provide consistency and speed by reducing error-prone manual tasks and making 24/7 operations possible. With automation technologies that support smarter end-to-end workflows, you can minimize hands-on time with and maximize throughput with KingFisher sample purification systems, QuantStudio 7 Pro real-time PCR systems, and the QuantStudio Absolute Q Digital PCR Suite.
For Research Use Only. Not for use in diagnostic procedures.