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Related Experiment Videos

Rapid oxidase method for testing oxidase-variable Aeromonas hydrophila strains

L K Hunt, T L Overman, R B Otero

    Journal of Clinical Microbiology
    |June 1, 1981
    PubMed
    Summary

    A new rapid oxidase test method prevents false-negative results for Aeromonas hydrophila. This technique provides same-day results within 3 hours for rapidly growing gram-negative rods.

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    Area of Science:

    • Clinical microbiology
    • Bacteriology

    Background:

    • False-negative oxidase reactions can occur with Aeromonas hydrophila.
    • Traditional methods require extended incubation periods, delaying identification.

    Purpose of the Study:

    • To describe a rapid, same-day oxidase test procedure.
    • To overcome false-negative oxidase reactions in Aeromonas hydrophila.
    • To reduce identification time for gram-negative rods.

    Main Methods:

    • A novel oxidase test procedure was developed.
    • The method is applicable to bacteria cultured on differential media like MacConkey agar.
    • Testing is performed on colonies removed from the agar surface.

    Main Results:

    • The procedure obviates false-negative oxidase reactions.
    • Oxidase testing can be completed within 3 hours.
    • This rapid method is suitable for any rapidly growing gram-negative rod.

    Conclusions:

    • A rapid, same-day oxidase test is effective for Aeromonas hydrophila.
    • This method significantly reduces the time required for bacterial identification.
    • The procedure offers a valuable alternative for routine microbiological diagnostics.

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