SPIDIA-DNA: An External Quality Assessment for the pre-analytical phase of blood samples used for DNA-based analyses

F. Malentacchi, M. Pazzagli, L. Simi, C. Orlando, R. Wyrich, C. C. Hartmann, P. Verderio, S. Pizzamiglio, C. M. Ciniselli, A. Tichopad, M. Kubista, S. Gelmini

Research output: Contribution to journalArticlepeer-review

Abstract

Background: The EC-funded project SPIDIA is aimed to develop evidence-based quality guidelines for the pre-analytical phase of blood samples used for DNA molecular testing. To this purpose, a survey and a pan-European External Quality Assessment (EQA) were implemented. Methods: SPIDIA facility sent to all the participants the same blood sample to be processed without time or temperature limitation. DNA quality parameters performed at SPIDIA facility included: UV spectrophotometric analysis of DNA purity and yield, PCR interferences study by Kineret software and DNA integrity analysis by pulsed field gel electrophoresis. Results: 197 applications have been collected from 30 European countries. A high variability of DNA fragmentation was observed whereas purity, yield and PCR interferences had a narrow distribution within laboratories. A significant difference between the RNase P single copy gene quantity obtained in the DNA samples extracted with the precipitation-based method respect to those obtained with beads and column-based methods was observed. Conclusions: The results of this study will be the basis for implementing a second pan-European EQA and the results of both EQAs will be pooled and will provide the basis for the implementation of evidence-based guidelines for the pre-analytical phase of DNA analysis of blood samples.

Original languageEnglish
Pages (from-to)274-286
Number of pages13
JournalClinica Chimica Acta
Volume424
DOIs
Publication statusPublished - Sep 23 2013

Keywords

  • Blood samples
  • DNA quality
  • External quality assessment
  • Pre-analytical phase

ASJC Scopus subject areas

  • Biochemistry
  • Clinical Biochemistry
  • Biochemistry, medical

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