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Sterilization with hydrogen peroxide vapors



Standard ISO 22441:2022 Sterilization of health care products

Low temperature vaporized hydrogen peroxide

Requirements for the development, validation and routine control of a sterilization process for medical devices

was published in August 2022.



In January 2024, the FDA published a document "Submission and Review of Sterility Information in Premarket Notification (510(k)) Submissions for Devices Labeled as Sterile", which reclassifies hydrogen peroxide vapor sterilization to A category. Hydrogen peroxide vapors belong to the same robust sterilization category A as

  • Dry heat sterilization

  • Sterilization by moist heat or steam

  • Ethylene oxide sterilization in fixed, rigid chambers

  • Radiation (e.g. gamma, electron beam)


In category B the FDA includes:

  • Ozone

  • Flexible bag systems (e.g. ethylene oxide in a flexible bag system, diffusion method, injection method)


There are still innovative methods of sterilization, among which the FDA lists:

  • Vaporized peracetic acid

  • High intensity light or pulse light

  • Microwave radiation

  • Sound waves

  • UV-light

For each category of sterilization method, the FDA requires specific documents, which are explicitly listed in the instruction.



In conclusion: for medical devices, hydrogen peroxide vapor is a full-fledged sterilization method. Compared to sterilization with ethylen oxide, it has the advantage of significantly lower toxicity.

Question: will hydrogen peroxide vapor be recognized as a sterilization method also for manufacturing of medicines?

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