Regarding internal quality control (QC)for a bench top analyzer:

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Internal QC should be performed regularly to ensure the accuracy and precision of the instrument. A minimum of once per shift is recommended to detect any potential issues early on. It cannot be assumed that the manufacturer has performed all necessary QC, and QC should be run whenever there is a change to the testing system. While daily assessments may be sufficient for some devices, it is not a one-size-fits-all approach and should be tailored to the specific analyzer and its usage.

Regarding Internal Quality Control (QC)for a Bench Top Analyzer