Department of Medical Laboratory Science, College of Applied Medical Sciences, University of Hail, Saudi Arabia.
Department of Clinical Laboratory, Maternity and Pediatric Hospital, Hail, Saudi Arabia.
Medicine (Baltimore). 2022 Jul 8;101(27):e29853. doi: 10.1097/MD.0000000000029853.
Patient safety and medical diagnosis of patients are mainly influenced by laboratory results. The present study aimed to evaluate the errors in the preanalytical phase of testing in a Clinical Chemistry diagnostic laboratory. A review was conducted at the Clinical Chemistry Laboratory of a hospital in Saudi Arabia from January 2019 to December 2020. Using the laboratory information system, the data of all canceled tests and requests were retrieved and evaluated for preanalytical errors. A total of 55,345 laboratory test requests and samples from different departments were evaluated for preanalytical errors. An overall rate of 12.1% (6705) was determined as preanalytical errors. The occurrence of these errors was found to be highest in the emergency department (21%). The leading preanalytical errors were nonreceived samples (3.7%) and hemolysis (3.5%). The annual preanalytical errors revealed an increasing rate in outpatient and inpatient departments, while a decreasing rate was observed in the emergency department. An increased rate of errors was also noted for the 2-year study period from 11.3% to 12.9%. The preanalytical phase has a significant impact on the quality of laboratory results. The rate of error in the study was high and the leading causes were nonreceived samples and hemolysis. An increased occurrence of hemolyzed samples in the outpatient department was noted. Enhanced educational efforts emphasizing specimen quality issues and training in sample collection among hospital staff must be carried out.
患者安全和对患者的医学诊断主要受到实验室结果的影响。本研究旨在评估临床化学诊断实验室检测前阶段的误差。在沙特阿拉伯一家医院的临床化学实验室进行了一项回顾性研究，时间为 2019 年 1 月至 2020 年 12 月。使用实验室信息系统，检索并评估了所有取消的测试和请求，以评估检测前误差。共评估了来自不同科室的 55345 份实验室检测请求和样本，以确定检测前误差。总体检测前误差率为 12.1%（6705）。发现这些错误在急诊部发生率最高（21%）。主要的检测前误差是非接收样本（3.7%）和溶血（3.5%）。年度检测前误差显示门诊和住院部呈上升趋势，而急诊部呈下降趋势。在 2 年的研究期间，误差率也从 11.3%增加到 12.9%。检测前阶段对实验室结果的质量有重大影响。本研究中的错误率较高，主要原因是非接收样本和溶血。还注意到门诊溶血样本的发生率增加。必须开展增强教育工作，强调标本质量问题，并对医院工作人员进行样本采集培训。
