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This Document Has Been Superseded
A newer publication replaces it: BSI BS EN ISO 20186-2
Molecular in vitro diagnostic examinations. Specifications for pre-examination processes for venous whole blood -- Isolated genomic DNA
This Technical Specification recommends the handling, documentation and processing of venous whole blood specimens intended for genomic DNA analysis during the preanalytical phase before a molecular assay is performed.
This Technical Specification covers specimens collected by venous whole blood collection tubes. This Technical Specification is applicable to molecular in vitro diagnostic examinations (e.g. in vitro diagnostic laboratories, laboratory customers, in vitro diagnostics developers and manufacturers, institutions and commercial organizations performing biomedical research, biobanks, and regulatory authorities).
Blood genomic DNA can fragment or degrade after blood collection. Therefore, special measures need to be taken to secure good quality blood samples for genomic DNA analysis. This is particularly relevant for analytical test procedures requiring high molecular weight DNA.
Different dedicated measures need to be taken for preserving blood cell free circulating DNA, which are not described in this Technical Specification. Circulating cell free DNA in blood is covered in CEN/TS 16835-3, Molecular in vitro diagnostic examinations - Specifications for pre-examination processes for venous whole blood - Part 3: Isolated circulating cell free DNA from plasma.
Different dedicated measures need to be taken for collecting, stabilizing, transporting and storing capillary blood as well as for blood collected and stored by paper based technologies. These are not described in this Technical Specification.
Pathogen DNA present in blood is not covered by this Technical Specification.
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