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dc.contributor.authorKristensen, Gunn Berit Bergeen_US
dc.contributor.authorAakre, Kristinen_US
dc.contributor.authorKristoffersen, Ann-Helenen_US
dc.contributor.authorSandberg, Sverreen_US
dc.description.abstractIn laboratory medicine, several studies have described the most frequent errors in the different phases of the total testing process, and a large proportion of these errors occur in the pre-analytical phase. Schemes for registration of errors and subsequent feedback to the participants have been conducted for decades concerning the analytical phase by External Quality Assessment (EQA) organizations operating in most countries. The aim of the paper is to present an overview of different types of EQA schemes for the pre-analytical phase, and give examples of some existing schemes. So far, very few EQA organizations have focused on the pre-analytical phase, and most EQA organizations do not offer pre-analytical EQA schemes (EQAS). It is more difficult to perform and standardize pre-analytical EQAS and also, accreditation bodies do not ask the laboratories for results from such schemes. However, some ongoing EQA programs for the pre-analytical phase do exist, and some examples are given in this paper. The methods used can be divided into three different types; collecting information about pre-analytical laboratory procedures, circulating real samples to collect information about interferences that might affect the measurement procedure, or register actual laboratory errors and relate these to quality indicators. These three types have different focus and different challenges regarding implementation, and a combination of the three is probably necessary to be able to detect and monitor the wide range of errors occurring in the pre-analytical phase.en_US
dc.publisherCroatian Society of Medical Biochemistry and Laboratory Medicineeng
dc.rightsAttribution-NonCommercial-NoDerivs CC BY-NC-NDeng
dc.subjectQuality assuranceeng
dc.subjectHealth careeng
dc.subjectquality indicatorseng
dc.subjectHealth careeng
dc.subjectExternal quality assessmenteng
dc.titleHow to conduct External Quality Assessment Schemes for the pre-analytical phase?en_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright by Croatian Society of Medical Biochemistry and Laboratory Medicine
dc.source.journalBiochemia Medica
dc.subject.nsiVDP::Medical sciences: 700::Basic medical, dental and veterinary sciences: 710::Medical biochemistry: 726eng
dc.subject.nsiVDP::Medisinske fag: 700::Basale medisinske, odontologiske og veterinærmedisinske fag: 710::Medisinsk biokjemi: 726nob

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