KHẢO SÁT TỶ LỆ TỪ CHỐI MẪU XÉT NGHIỆM VÀ MỘT SỐ YẾU TỐ LIÊN QUAN TẠI BỆNH VIỆN E TỪ THÁNG 2- 5/2025

Abstract

This study aimed to determine the rejection rate, causes, and associated factors of laboratory sample rejections at E Hospital from February to May 2025. A cross-sectional descriptive design was applied, examining specimens accompanied by test request forms sent from clinical departments to the Hematology, Biochemistry, and Microbiology laboratories. During the study period, 464 out of 182,541 samples were rejected, yielding a rejection rate of 0.25%. The primary reasons for rejection were errors in specimen quality (94.4%), administrative errors (2.4%), and insufficient specimen quantity (3.0%). The Microbiology Department exhibited the highest rejection rate at 0.44%, with a more than twofold increased risk of error compared to the Biochemistry Department (OR = 0.56; P < 0.001). Additionally, samples originating from clinical departments were approximately 4.2 times more likely to be rejected due to quality-related issues than those from outpatient departments. The findings highlight a low but notable rejection rate, influenced by both procedural and departmental factors, emphasizing the need for targeted quality improvement interventions in sample collection and submission processes.