US FDA
21 CFR 820.120 - Device Labeling
Plain-language explanation, inspection context and common violation patterns.
What it says
Device labeling must be controlled to ensure correctness, legibility and proper application, with procedures addressing labeling storage to prevent mix-ups, deterioration or damage, and verification that the correct labeling is used for each specific device before release.
Paraphrased for plain-language clarity. Always verify against the current published regulation text.
What it means in practice
- This provision addresses labeling as a quality system control point distinct from the content requirements in 21 CFR Part 801, focusing on preventing the physical mix-up of labeling between different device models or configurations during production.
- Facilities producing multiple device variants with similar packaging are at particular risk here, since a labeling control failure can result in correctly manufactured devices shipped with the wrong label.
- Label storage conditions matter because labeling that deteriorates or becomes illegible before use can itself become a quality system control failure, not just a cosmetic issue.
What FDA inspectors look for
- Whether labeling control procedures actually prevent mix-ups between similar labeling used for different device variants on the same production line.
- Whether a documented verification step confirms the correct labeling was applied to each specific device before release.
- Whether labeling storage conditions are controlled to prevent deterioration or damage prior to use.
Most common violation
Visually similar labeling for different device variants stored or staged without a reliable control preventing the wrong label from being applied during production.
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