How to troubleshoot when medical laboratory equipment fails quality control (QC)?

When laboratory equipment fails quality control, do not rush to release samples. Check if both high and low values are off, or if only a single level is abnormal; then check the QC lot number, expiration date, reconstitution time, and storage temperature. Regarding the equipment, check the calibration status, reagent levels, bubbles in the tubing, temperature, and recent maintenance records…