Guidelines

Guidelines for the Storage of Sterile Items

Unit for Laboratory Animal Medicine
Nov 21, 2019 12:00 am
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To establish procedures for the appropriate handling and storage of sterile items.

  • Responsibility
    1. Veterinary Personnel
    2. Investigative Personnel

  • Glossary Definitions

    Sterilize

    To eliminate all forms of microbial life (e.g., autoclave, ethylene oxide sterilization, vaporized hydrogen peroxide sterilization).

    Related Terms: 
    DisinfectCleanSanitize

    Event Related Sterility

    The sterility of an item is determined by how it is handled rather than by time (an expiration date).

    Related Terms: 
    SterilizeProcess Monitors

    Process Monitors

    Steam indicator tape, ethylene oxide indicator tape, sterilization indicator strip, biological indicator, peel pouch indicator.

    Related Terms: 
    Biological Indicator (BI)Sterilize

  • Procedures

    1. Packaging

    1. Ensure that packaging materials are compatible with the sterilization process being used.
    2. Ensure that packaging is sufficiently strong to resist punctures and tears to provide a barrier to microorganisms and moisture.

    2. Storage of Sterile Supplies

    1. Ensure storage area is:
      1. In well ventilated area
      2. Free of airborne and surface dust
      3. Protected against moisture, insects, temperature, and humidity extremes
    2. Items will remain sterile indefinitely unless the package becomes wet, punctured, torn, seal is broken, or is damaged in some other way, or the process monitor is questionable  
    3. For commercially prepared sterile items with an established expiration date, those manufacturer-recommended expiration dates should be followed.
    4. Any item suspected of being compromised must not be used

    3. Maintenance of Sterilized Supplies

    1. Utilize on a first in/first out basis to ensure usage of oldest stock first
      1. indicate the date of sterilization on each processed item
      2. The date is used for stock rotation purposes, to ensure usage of oldest stock first  
    2. If at any point sterility and/or barrier is compromised (pack becomes wet, punctured, torn, seal is broken, or is damaged in some other way, or the process monitor is questionable) the package/pack will need to be repacked and reprocessed
      1. Place into new package/drape compatible with the sterilization process being used
      2. Place a new sterilization indicator strip inside the package/pack
      3. Properly seal package/pack
        1. Use appropriate indicator tape
        2. Self-seal pouch(es)
      4. Label package with:
        1. Date of sterilization
      5. Sterilize

  • References
    1. Butt WE, Bradley DV, Jr., Mayhew RB, Schwartz RS. Evaluation of the shelf life of sterile instrument packs. Oral Surg. Oral Med. Oral Pathol. 1991;72:650-4.
    2. Webster J, Lloyd W, Ho P, Burridge C, George N. Rethinking sterilization practices: Evidence for event-related outdating. Infect Control Hosp Epidemiol 2003;24:622-4.
Species: Cats Chickens/Avian Cows Dogs Ferrets Fish, Amphibians, and Reptiles Guinea Pigs Hamsters Mice Other Rodents Primates Rabbits Rats Sheep Swine
Questions?

Questions or concerns about the content of this document should be directed to the Unit for Laboratory Animal Medicine (ULAM) at (734) 764-0277 or ulam-questions@umich.edu.