Application of sigma method for quality and performance assessement of biochemistry testings in The biochemistry laboratory at Pasteur Institute in Ho Chi Minh City

Abstract

Sigma method is calculated in our lab and evaluated from January to June 2017 (duration 2017-2026). It is monitoring and evaluating research for biochemical assays on the AU 680 system; consist of: HDL, Triglyceride, Uric Acid, Bilirubin, Bilirubin direct, GGT and Glucose. The Sigma values are the best indicators; and the “guater than 6” is the best one on both IQC levels: normal and abnormal. ALT, AST are the best performer which has a (Sigma > 6) on level 2. Sodium, Calcium are poor performer on both level (Sigma < 3). Evaluations sigma of glucose, ALT, urea, uric acid, GGT, creatinine on the AU 680 and Cobas c501 showed that there is Sigma value agreement. However, it is a little different for glucose testing Sigma value with QC level 1 on AU 680 and Cobas c501, 6.07 and 5.37, respectively. However, Sigma value > 3 is considered as clinical acceptable. Performance assessement of biochemistry testings in the biochemistry laboratory needs to follow-up and investigate furthermore.