Guidelines

1. C24. Statistical Quality Control for Quantitative Measurement Procedures: Principles and Definitions. Clinical and Laboratory Standards Institutetm, (formerly NCCLS) Wayne, PA, 2006.
2. National Committee for Clinical Laboratory Standards. Evaluation of precision performance of clinical chemistry devices - Second Edition; Tentative Guideline. NCCLS document EP5-T2 (ISBN 1-56238-145-8). NCCLS, 771 East Lancaster Avenue, Villanova, Pennsylvania, 19805, 1992.