Open AccessUse of prior manufacturer specifications with Bayesian logic eludes preliminary phase issues in quality control
Author(s) -
Panagiotis Tsiamyrtzis,
Frédéric Sobas,
Claude Négrier
Publication year - 2015
Publication title -
blood coagulation and fibrinolysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.376
H-Index - 71
eISSN - 1473-5733
pISSN - 0957-5235
DOI - 10.1097/mbc.0000000000000314
Subject(s) - control chart , bayesian probability , computer science , reliability engineering , quality (philosophy) , control (management) , phase (matter) , statistics , data mining , mathematics , process (computing) , artificial intelligence , engineering , philosophy , chemistry , organic chemistry , epistemology , operating system
The present study seeks to demonstrate the feasibility of avoiding the preliminary phase, which is mandatory in all conventional approaches for internal quality control (IQC) management. Apart from savings on the resources consumed by the preliminary phase, the alternative approach described here is able to detect any analytic problems during the startup and provide a foundation for subsequent conventional assessment. A new dynamically updated predictive control chart (PCC) is used. Being Bayesian in concept, it utilizes available prior information. The manufacturer's prior quality control target value, the manufacturer's maximum acceptable interassay coefficient of variation value and the interassay standard deviation value defined during method validation in each laboratory, allow online IQC management. An Excel template, downloadable from journal website, allows easy implementation of this alternative approach in any laboratory. In the practical case of prothrombin percentage measurement, PCC gave no false alarms with respect to the 1ks rule (with same 5% false-alarm probability on a single control sample) during an overlap phase between two IQC batches. Moreover, PCCs were as effective as the 1ks rule in detecting increases in both random and systematic error after the minimal preliminary phase required by medical biology guidelines. PCCs can improve efficiency in medical biology laboratories.