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The DOI matches its Crossref record; 9 of the 9 references it cites were found in a registry or an index.

Towards standardisation of cell-free DNA measurement in plasma: controls for extraction efficiency, fragment size bias and quantification

Open access
Devonshire, Alison S., Whale, Alexandra S., Gutteridge, Alice, Jones, Gerwyn, Cowen, Simon, Foy, Carole A., Huggett, Jim F.·2014·Analytical and Bioanalytical Chemistry

Abstract

Circulating cell-free DNA (cfDNA) is becoming an important clinical analyte for prenatal testing, cancer diagnosis and cancer monitoring. The extraction stage is critical in ensuring clinical sensitivity of analytical methods measuring minority nucleic acid fractions, such as foetal-derived sequences in predominantly maternal cfDNA. Consequently, quality controls are required for measurement of extraction efficiency, fragment size bias and yield for validation of cfDNA methods. We evaluated the utility of an external DNA spike for monitoring these parameters in a study comparing three specific cfDNA extraction methods [QIAamp circulating nucleic acid (CNA) kit, NucleoSpin Plasma XS (NS) kit and FitAmp plasma/serum DNA isolation (FA) kit] with the commonly used QIAamp DNA blood mini (DBM) kit. We found that the extraction efficiencies of the kits ranked in the order CNA kit > DBM kit > NS kit > FA kit, and the CNA and NS kits gave a better representation of smaller DNA fragments in the extract than the DBM kit. We investigated means of improved reporting of cfDNA yield by comparing quantitative PCR measurements of seven different reference gene assays in plasma samples and validating these with digital PCR. We noted that the cfDNA quantities based on measurement of some target genes (e.g. TERT) were, on average, more than twofold higher than those of other assays (e.g. ERV3). We conclude that analysis and averaging of multiple reference genes using a GeNorm approach gives a more reliable estimate of total cfDNA quantity.

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Metadata

Authors
Devonshire, A. S., Whale, A. S., Gutteridge, A., Jones, G., Cowen, S., Foy, C. A., & Huggett, J. F.
Venue
Analytical and Bioanalytical Chemistry
Published
2014-05-24
Volume
406
Issue
26
Pages
6499-6512
ISSN
  • 1618-2642 (ISSN-L)
  • 1618-2650
OpenAlex
W2082540681
Cited by
299
References
9
FWCI
20.25
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Towards standardisation of cell-free DNA measurement in plasma: controls for extraction efficiency, fragment size bias and quantification. https://app.cochat.ai/papers/10.1007/s00216-014-7835-3
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Devonshire, A. S., Whale, A. S., Gutteridge, A., Jones, G., Cowen, S., Foy, C. A., & Huggett, J. F. (2014). Towards standardisation of cell-free DNA measurement in plasma: controls for extraction efficiency, fragment size bias and quantification. Analytical and Bioanalytical Chemistry. https://doi.org/10.1007/s00216-014-7835-3

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