Kết quả bước đầu ứng dụng chỉ số Six sigma trong quản lý chất lượng xét nghiệm

Abstract

Objective: To evaluate the efficacy of maintenance for improving the quality of laboratory tests through Sig sigma scale. Subject and method: Sigma metrics were calculated for serum ure, creatinin, triglyceride, ALT, GGT which have been complying ISO 15189:2012. The present study was conducted in two stages, the first stage was performed from 1^st to 30^th April 2020 for the baseline calculation, and the second was conducted in whole May 2020 with enhacing the mantenace solutions. The sigma metrics were calculated through 2 quality control (QC) samples (QC1 for low concentration, and QC 2 for high concentration) at each stage. Result: At the first stage, only sigma metrics of triglycerid were over 6 with 6.7 and 8.8. The others did not reach at Six sigma. After maintenaces, the sigma values of 2 tests were over 6 sigma including triglycerid and ALT in 2 QC samples which were 9.5, 9.1 and 6.2, 8.0, respectively. Mean while creatine 1 and GGT 2 were over 6 sigma after maintenance, and the sigma values of others were less than 6 sigma but slighly increased in comparation with the first stage (Ure 1: 2.5, ure 2: 2.5; creatinin 2: 4.2, GGT 1: 5.4). Conclusion: Sigma metrics increased after maintenance solutions. 4 tests have sigma values over 6 containing ALT, triglyceride, GGT and creatinine. Quality of biochemisty test was improved after maintenance through sigma scale.