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Guidelines for setting up an External Quality Assessment Scheme for blood smear interpretation. Part II: survey preparation, statistical evaluation and reporting

  • Hematology Working Group of the European External Committee for External Quality Assurance Programmes in Laboratory Medicine (EQALM)  , Juan-Lluis Vives Corrons , Marjan Van Blerk , Stephanie Albarède , Gabriela Gutierrez , Silke Heller , Gunnar Nordin , Milan Skitek , Andre Deom , Katalin Horváth , Barbara De la Salle and Jean-Claude Libeer
Published/Copyright: July 31, 2006

Abstract

Blood smear analysis is a well-known technique in medical laboratories. The clinical relevance of this analysis and its interpretation are very important. Consequently, monitoring of laboratory performance by an external quality assessment scheme is strongly recommended. This article represents a very practical guidance document for External Quality Assessment Scheme (EQAS) organizers for setting up blood smear schemes. In the first part of the guidelines, the Hematology Working Group of the European External Committee for External Quality Assurance Programmes in Laboratory Medicine (EQALM) published practical information for the preparation of blood smears for use in an EQAS. Part II focuses on aspects such as survey preparation, statistical evaluation and reporting, and describes particular details for organizing blood morphology EQA surveys by means of virtual microscopy.

Clin Chem Lab Med 2006;44:1039–43.


Corresponding author: Jean-Claude Libeer, Clinical Biology Department. Scientific Institute of Public Health, Juliette Wytsmanstraat 14, 1050 Brussels, Belgium Phone: +32-2-6425527, Fax: +32-2-6425645,

References

1. Bain B. Diagnosis from the blood smear. N Engl J Med 2005; 353:498–507.10.1056/NEJMra043442Search in Google Scholar PubMed

2. Lewis SM. Blood film evaluations as quality control activity. Clin Lab Haematol 1990; 12(Suppl 1):119–27.Search in Google Scholar

3. Rajamäki A. Interlaboratory variation of leukocyte differential count: results from the Finnish proficiency testing programme in haematological morphology, 1974–1977. Scand J Clin Lab Invest 1979; 39:613–7.10.3109/00365517909108865Search in Google Scholar PubMed

4. Rajamäki A. External quality control in haematological morphology: a method to assess the performance of an individual laboratory and changes in it. Scand J Clin Lab Invest 1980; 40:79–84.10.3109/00365518009091530Search in Google Scholar PubMed

5. Vives Corrons JL, Albarède S, Flandrin G, Heller S, Horvath K, Houwen B, et al. Guidelines for blood smear preparation and staining procedure for setting up an external quality assessment scheme for blood smear interpretation. Part I: control material. Clin Chem Lab Med 2004; 42:922–6.Search in Google Scholar

6. Lundin M, Lundin J, Isola J. Virtual microscopy. Applications in digital pathology. J Clin Pathol 2004; 57:1250–1.10.1136/jcp.2004.019919Search in Google Scholar PubMed PubMed Central

7. http://www.iata.org/NR/ContentConnector/CS2000/Site-Interface/pdf/cargo/dg/Consignment_diagnostic_speci-mens_2003.pdf.Search in Google Scholar

8. WHO. International classification of diseases. http://www.who.int/classifications/icd/en/.Search in Google Scholar

9. Jaffe ES, Harris NL, Stein H, Vardiman JW, editors. WHO classification of tumours of haematopoietic and lymphoid tissues. Lyon: IARC Press, 2001.Search in Google Scholar

10. ISO/FDIS 13528. Statistical methods for use in proficiency testing by interlaboratory comparisons, 2005.Search in Google Scholar

11. Tukey JW. Exploratory data analysis. Reading, MA: Addison-Wesley, 1977.Search in Google Scholar

12. Rümke CL. De nauwkeurigheid van percentages: tabellen met betrouwbaarheidsintervallen. Ned Tijdschr Geneesk 1976; 120:2052–8.Search in Google Scholar

13. Skitek M. Acceptability limits based on biology goals in haematology EQAS. Accred Qual Assur 2005; 10:112–5.10.1007/s00769-004-0889-8Search in Google Scholar

14. Heller S. External quality assessment scheme for haematology in Germany. Ann Ist Super Sanit 1995; 31:87–93.Search in Google Scholar

15. Vives Corrons JL, Gutierrez G, Jou JM, Reverter JC, Martínez Brotons F, Domingo A, et al. Characteristics and performance of the External Quality Assessment Scheme (EQAS) for haematology in Spain. 10 years of experience. Ann Ist Super Sanita 1995; 31:95–101.Search in Google Scholar

16. Maziotta D, Harel D, Schumann G, Libeer JC. Guidelines for the requirement for the competence of EQAP organizers in medical laboratories.IFCC/EMD/C-AQ 2003 http://www.eqalm.org/education/IFCC%20document_PDF.pdf.Search in Google Scholar

17. Libeer JC. Virtual microscopy: revolutionary means for EQAS in the near future. Accred Qual Assur 2006, DOI/10.1007/s00769-006-0146-4. In press.10.1007/s00769-006-0146-4Search in Google Scholar

18. Lee SH. Virtual microscopy: applications to hematology. Lab Hematol 2005; 11:38–45.10.1532/LH96.04059Search in Google Scholar PubMed

Received: 2006-2-27
Accepted: 2006-4-27
Published Online: 2006-7-31
Published in Print: 2006-8-1

©2006 by Walter de Gruyter Berlin New York

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