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Preparation of fresh frozen human sera for external quality assessment
A Uldall1, S Glavind-Kristensen, S Bak
1Department of Clinical Chemistry, University of Copenhagen, Herlev Hospital, Denmark.
Scandinavian Journal of Clinical and Laboratory Investigation
|February 1, 1989
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.