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PCR assay - Articles and news items
Issue 6 2014 / 23 December 2014 / Natalia Meani and Manuela Vecchi
Recognised as one of the major scientific breakthroughs of the 20th century, polymerase chain reaction (PCR) is a quick and simple method to create, in a test tube, millions of copies of a given DNA segment from a complex mixture of genetic material. This method has greatly stimulated biochemical, molecular biology and genetic research and, given its ability to amplify DNA from limited amounts of biologic samples, including fossils, opened the way for new applications in medicine, genetics, biotechnology, forensics and paleobiology…
This pharma webinar introduces Viability PCR as a fast and powerful tool to analyze food samples for the presence of potentially harmful microbes.
The process of building robust PCR/qPCR assays is a matter of perseverance and consistency. A few questions that should be answered prior to starting development will help make the process more efficient and effective:
Does the assay need to simply detect the presence of the target (qualitative), or must it assign a value to the detected target (quantitative)? The development process for a qualitative or quantitative assay, although similar in many respects, ultimately will take different paths
In what type of matrix will samples be? Matrix plays an important role in both development and validation of the assay. If the assay is needed for multiple matrices (whole blood, plasma, serum, differing tissue types, etc.), each matrix must be evaluated individually to determine its impact on assay performance
Will extraction be required, and by what method? 4) What throughput will be needed?
Answering these questions early in the process will help prevent ‘reworks’ later.
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