About This Tool

Generate professional Levey-Jennings (LJ) quality control charts instantly with this free online LJ chart maker. Designed for medical laboratories, this secure browser-based tool allows you to plot daily QC data, automatically calculate Mean, SD, and CV%, and generate audit-ready printouts in seconds.

Tutorial for help: https://youtu.be/NtdtkSd8Cec

Created using www.phoenicx.org

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I built this free QC tool to help fellow lab technicians streamline their workflow. If you found it valuable for your clinical laboratory, please consider leaving a small tip to help keep the server running and ad-free! ❤️

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