Many assays have integrated, built-in, or internal controls to demonstrate their operability at specific procedural steps. What role do these built-in controls play in quality control to assure ...

External Quality Assessment (EQA) is a cornerstone in maintaining and improving the accuracy, reliability and comparability of clinical laboratory test results worldwide. By systematically comparing ...

Reference materials (RMs) and external quality assessment (EQA) are cornerstones in clinical chemistry, underpinning the harmonisation, comparability, and accuracy of laboratory measurements. RMs, ...