Authors
Abstract
Introduction: In view of the direct effect of the working methods on the quality of data in the laboratory، quality control of data and results of the Biochemistry Ward of the Laboratory includes taking into account all the factors and variables relating to all the pre-analytical، analytical and post-analytical steps at this ward.
Objective: The objective of this study is to examine the quality control of data and results of the biochemistry wards of some laboratories.
Method: In a descriptive research، 40 biochemistry wards of the laboratories of universities of medical sciences and health services in the city of Tehran were examined. Data were collected by observation and asking questions. The data collection tool was checklists and questionnaires. By checklist activities and procedures and 33 effective factors were examined in the pre-analytical step 18 effective factors were examined in the analytical step and 8 effective factors in post-analytical step. Data from questions and observations were analyzed by using descriptive statistics and by determining the absolute and relative frequencies.
Results: On average، the checklist findings show that، in the biochemistry wards in all studied hospital laboratories، 58، 68 and 87 percent of the factors، respectively، affecting the pre-analytical، analytical and post-analytical data and results are taken into consideration.
Conclusion: The present research showed that، by comparing the findings obtained using the two tools، it can be found out that the findings do not match each other in certain factors and that the amount of findings obtained from the questionnaire is more than the findings obtained from the checklist. For example، there is no enough attention paid to other factors in pre-analytical step (Preparing the patient Paying attention to the physiological changes of the patient’s body etc. )، analytical step (availability of written guidelines for performing certain work where the samples are analyzed Calibrating the instruments according to the standard program etc. ) and post-analytical step (precision in recording distinguishing features in real values).
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