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Original Article

Preparation of fresh frozen human sera for external quality assessment

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Pages 11-14 | Received 15 Feb 1988, Accepted 26 May 1988, Published online: 08 Jul 2009
 

Abstract

A procedure for preparation of unmodified and modified fresh frozen human quality testing sera is described. The materials have been used for external quality assessment in Denmark. Examples of improvements in external quality assessment schemes using this type of material are shown.

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