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Year : 2015  |  Volume : 2  |  Issue : 1  |  Page : 30-35

Utility of sample rejection rate as a quality indicator in developing countries

Department of Pathology, Himalayan Institute of Medical Sciences, Dehradun, Uttarakhand, India

Correspondence Address:
Dr. Vibha Gupta
Department of Pathology, Himalayan Institute of Medical Sciences, Swami Ram Nagar, Doiwala, Dehradun - 248 140, Uttarakhand
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2319-1880.160245

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Background: The present study aimed at assessing the sample rejection rate during the 1 st year of implementation of the quality management system in the laboratory of a tertiary care medical center in the developing world. Materials and Methods: Retrospective analysis of data relating to rejections of the request forms and samples sent for hematological and biochemistry investigations from inpatients departments after 1-year of implementation of laboratory management system (ISO 15189; 2007) was done. The mean rejection rate was calculated. It was compared with rejection rates reported by various laboratories. The criteria followed for rejection in our laboratory were compared with those laid down by laboratories in previous studies. Descriptive statistics was used in the study. Results: Of the 54,603 request forms and samples received during the study period, 3936 (7.2%) were rejected. Issues related to request forms and issues related to the sample, each accounted for nearly 50% rejections. Among the issues related to request from, the most common reason was "incomplete form" leading to 50% rejection. The most common reason for rejection of the sample was "clotted sample" (27.1%). When rejection rates as well as criteria followed by our laboratory were compared with other laboratories, it was found that 32 different criteria for rejections were followed across various laboratories. However, only one criterion (inadequate volume) was followed by all except one study (90%), suggesting a lack of uniformity over rejection criteria across studies. Conclusions: We found that the rejection rates among various laboratories in developing and developed countries differ. Moreover, the rates differ among various laboratories in developing countries. And the criteria that were followed for rejection differed across studies.

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