Background (a) To evaluate the clinical performance of endocrine analytes using the sigma
metrics (σ) model.(b) To redesign quality control strategies for performance improvement …

Introduction Sigma metrics were applied to evaluate the performance of 20 routine chemistry
assays, and individual quality control criteria were established based on the sigma values of …

Abstract Background: Six Sigma metrics were used to assess the analytical quality of
automated clinical chemistry and immunoassay tests in a large Belgian clinical laboratory …

Background: Clinical laboratories function to deliver accurate, reliable, and timely reported
results which are used in decision-making, diagnosis, and monitoring. Sigma metrics help to …

Background and aim Sigma metrics are applied in clinical laboratories to assess the quality
of analytical processes. A parameter associated to a Sigma> 6 is considered “world class” …

OBJECTIVE: Six Sigma is one of the most popular quality management system tools
employed for process improvement. The Six Sigma methods are usually applied when the …

Background Six Sigma is a popular quality management system that enables continuous
monitoring and improvement of analytical performance in the clinical laboratory. We aimed …

Background Unreliable and ingenuine results issued by clinical laboratories have serious
consequences for the patients. Sigma metrics is a standardized tool for Quality assessment …

Objective To assess the analytical performance of instruments and methods through
external quality assessment and proficiency testing data on the Sigma scale. Design and …

Background Sigma metrics have been adapted for the clinical laboratory to incorporate
observed accuracy, precision, and total error allowed. The higher the Sigma level for a …