# Sigma metrics in clinical chemistry laboratory – A guide to quality control

> Research article (DOAJ (DOAJ: Directory of Open Access Journals), 2015) · cited 29× · AI/ML

**Wikidata**: [openalex:W2292864794](https://www.wikidata.org/wiki/openalex:W2292864794)  
**Source**: https://4ort.xyz/entity/sigma-metrics-in-clinical-chemistry-laboratory-a-guide-to-quality-control