enhttps://www.qualichart.com/blog/Articles about internal quality controlThu, 17 Sep 2026 00:00:00 GMThttps://www.qualichart.com/coefficient-of-variation-laboratory/https://www.qualichart.com/coefficient-of-variation-laboratory/Calculate the CV from the mean and standard deviation and understand the precautions to monitor the imprecision of controls.Tue, 15 Sep 2026 00:00:00 GMThttps://www.qualichart.com/how-to-choose-iqc-software/https://www.qualichart.com/how-to-choose-iqc-software/Compare charts, rules, records, integration and support with an IQC software assessment roadmap for routine laboratory work.Tue, 15 Sep 2026 00:00:00 GMThttps://www.qualichart.com/external-quality-assessment-proficiency-testing/https://www.qualichart.com/external-quality-assessment-proficiency-testing/Understand how CEQ and IQC complement each other and organize the analysis of proficiency test results in the laboratory.Tue, 15 Sep 2026 00:00:00 GMThttps://www.qualichart.com/total-allowable-error-tea/https://www.qualichart.com/total-allowable-error-tea/Know the role of total allowable error in method evaluation and document the source of the specification used by the laboratory.Tue, 15 Sep 2026 00:00:00 GMThttps://www.qualichart.com/levey-jennings-chart-excel/https://www.qualichart.com/levey-jennings-chart-excel/Create a Levey-Jennings graph with demonstrative data, mean and standard deviation limits. Download a study model.Tue, 15 Sep 2026 00:00:00 GMThttps://www.qualichart.com/measurement-uncertainty-laboratory/https://www.qualichart.com/measurement-uncertainty-laboratory/Differentiate measurement imprecision, bias, and uncertainty and organize the data needed to estimate method uncertainty.Tue, 15 Sep 2026 00:00:00 GMThttps://www.qualichart.com/six-sigma-clinical-laboratory/https://www.qualichart.com/six-sigma-clinical-laboratory/Understand the sigma metric, calculate with TEa, bias and CV and take care to interpret analytical performance.Tue, 15 Sep 2026 00:00:00 GMThttps://www.qualichart.com/laboratory-method-verification/https://www.qualichart.com/laboratory-method-verification/Organize a performance verification script before incorporating or changing a method into the laboratory routine.Tue, 15 Sep 2026 00:00:00 GMThttps://www.qualichart.com/value-of-investing-in-laboratory-quality/https://www.qualichart.com/value-of-investing-in-laboratory-quality/Understand the real value of investing in laboratory quality: why Internal Quality Control represents savings and a competitive advantage.Tue, 12 Dec 2023 00:00:00 GMThttps://www.qualichart.com/iqc-journey-baseline-and-routine/https://www.qualichart.com/iqc-journey-baseline-and-routine/The IQC Journey: building the basis and routine of Internal Quality Control. Step-by-step guide to implementing IQC in the clinical laboratory.Wed, 29 Nov 2023 00:00:00 GMThttps://www.qualichart.com/paulo-c-azevedo-laboratory-case-study/https://www.qualichart.com/paulo-c-azevedo-laboratory-case-study/Success story: how QualiChart made the Paulo C. Azevedo Laboratory tests reliable with Internal Quality Control.Wed, 23 Aug 2023 00:00:00 GMThttps://www.qualichart.com/comparing-internal-quality-control-methods/https://www.qualichart.com/comparing-internal-quality-control-methods/How to overcome the limitations of IQC with comparative analysis of traditional methods. Strategies for more efficient clinical laboratories.Thu, 27 Jul 2023 00:00:00 GMThttps://www.qualichart.com/control-materials-internal-quality-control/https://www.qualichart.com/control-materials-internal-quality-control/Complete guide on control material: what it is, how to choose it and how to use it correctly in the Internal Quality Control of the clinical laboratory.Fri, 03 Mar 2023 00:00:00 GMThttps://www.qualichart.com/automating-internal-quality-control/https://www.qualichart.com/automating-internal-quality-control/Discover the advantages of Internal Quality Control automation: greater efficiency, fewer operational errors and compliance with RDC 978/2025 ANVISA.Mon, 26 Sep 2022 00:00:00 GMThttps://www.qualichart.com/laboratory-accreditation/https://www.qualichart.com/laboratory-accreditation/What is laboratory accreditation, how the evaluation process works and why certification is fundamental to the quality of the clinical laboratory.Wed, 08 Jun 2022 00:00:00 GMThttps://www.qualichart.com/manufacturer-ranges-for-internal-quality-control/https://www.qualichart.com/manufacturer-ranges-for-internal-quality-control/Perform IQC according to the manufacturer's stated range: understand why this practice can compromise the safety of results in the clinical laboratory.Wed, 08 Jun 2022 00:00:00 GMThttps://www.qualichart.com/levey-jennings-chart-quality-control/https://www.qualichart.com/levey-jennings-chart-quality-control/The Levey-Jennings chart is the main visual tool of IQC. Learn how to interpret it to identify errors and trends in the clinical laboratory.Wed, 08 Jun 2022 00:00:00 GMThttps://www.qualichart.com/clinical-laboratory-safety-requirements/https://www.qualichart.com/clinical-laboratory-safety-requirements/Learn about the safety requirements for clinical laboratories according to ANVISA: PPE, standards of good practice and requirements for proper functioning.Wed, 08 Jun 2022 00:00:00 GMThttps://www.qualichart.com/pre-analytical-phase-laboratory-testing/https://www.qualichart.com/pre-analytical-phase-laboratory-testing/Understand the 3 phases of laboratory tests: pre-analytical, analytical and post-analytical, and how each step impacts the quality and reliability of the results.Tue, 07 Jun 2022 00:00:00 GMThttps://www.qualichart.com/why-internal-quality-control-matters/https://www.qualichart.com/why-internal-quality-control-matters/6 reasons to take care of Internal Quality Control in the clinical laboratory: safety, compliance with RDC 978 and reliable results.Tue, 07 Jun 2022 00:00:00 GMThttps://www.qualichart.com/understanding-internal-quality-control/https://www.qualichart.com/understanding-internal-quality-control/Everything about Internal Quality Control in the clinical laboratory: concepts, steps, Westgard rules and how to guarantee reliable tests for patients.Tue, 07 Jun 2022 00:00:00 GMThttps://www.qualichart.com/seven-ways-to-manage-laboratory-nonconformities/https://www.qualichart.com/seven-ways-to-manage-laboratory-nonconformities/7 fundamental attitudes to deal with nonconformities in the clinical laboratory: how to perform critical analysis and ensure continuous improvement of IQC.Mon, 06 Jun 2022 00:00:00 GMThttps://www.qualichart.com/westgard-rules-recognizing-control-patterns/https://www.qualichart.com/westgard-rules-recognizing-control-patterns/Learn to interpret Westgard's multiple rules to identify systematic and random errors in the laboratory's Internal Quality Control.Mon, 06 Jun 2022 00:00:00 GMThttps://www.qualichart.com/systematic-and-random-errors/https://www.qualichart.com/systematic-and-random-errors/Learn the difference between systematic and random errors in Internal Quality Control and how Westgard rules help identify them in the laboratory.Mon, 06 Jun 2022 00:00:00 GMThttps://www.qualichart.com/rdc-302-2005-laboratory-regulation/https://www.qualichart.com/rdc-302-2005-laboratory-regulation/Understand why RDC 302/2005 is a historical reference and how to review procedures according to RDC 978/2025 and its amendments.https://www.qualichart.com/rdc-978-2025-internal-quality-control/https://www.qualichart.com/rdc-978-2025-internal-quality-control/Find out what changes in Internal Quality Control with RDC 978/2025 ANVISA. Understand the main requirements of the new laboratory regulations.