Department of pathology and laboratory medicine at Jigme Dorji Wangchuck National Referral Hospital striving for quality: external quality assessment scheme in hematology

Abstract

Introduction: Quality Assurance comprising External Quality Assessment Scheme (EQAS) and Internal Quality Control (IQC) is an indispensible part of the laboratory analytical process to ensure reliable results from the laboratories. However, due to various challenges in many developing countries such as limitations in resources and manpower, EQAS samples are often given less importance at laboratories. The objective of this study is to assess performance on hematology EQAS samples received from Pacific Paramedical Training Center- External Quality Assesment Scheme (PPTC-EQAS) and International External Quality Assesment Scheme-United Kingdom (IEQAS-UK)since 2007 and 2008 respectively. The findings from this study will be helpful to establish an effective system to ensure timely follow up and corrective actions to improve the quality of laboratory services.

Methods:The feedback of the EQAS results submitted thrice a year to the PPTC-EQAS and six times a year to the IEQAS-UK since 2007 and 2008 respectively were reviewed to assess the laboratory’s performance and to determine the effectiveness of EQAS participation for improving the performance of laboratory hematology in Bhutan.

Results:For PPTC-EQAS, the average yearly scores were 69.00%, 75.00%, 87.66%, 87.50%, 70.00%, 80.33%, 80.50%, 85.00% for the years 2007-2014. For IEQAS-UK, the average yearly scores were 76.66%, 75.95%, 77.91%, 85.83%, 92.50%, 63.88% and 98.14% for the years 2008-2014. Our results show inconsistent performances on both EQAS samples despite gradual improvement over the last seven years.

Conclusions:We conclude that, strengthening the system for regular follow up and implementing corrective actions for the outlying results in addition to replacement of the equipment could improve the trend and ensure consistency of the performance.