CRCST Practice Exam

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Prepare for the CRCST exam with our interactive quiz featuring multiple choice questions and detailed explanations. Improve your knowledge and confidence before test day!

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Which microorganism is the preferred choice for hydrogen peroxide gas plasma sterilization?

Escherichia coli
Pseudomonas aeruginosa
Geobacillus stearothermophilus
Staphylococcus aureus

The correct answer is: Geobacillus stearothermophilus

The preferred choice for hydrogen peroxide gas plasma sterilization is Geobacillus stearothermophilus. This is because Geobacillus stearothermophilus is a spore-forming bacterium that is known for its resistance to various sterilization methods, making it an ideal test organism for validating the efficacy of sterilization processes. In this case, using Geobacillus stearothermophilus helps ensure that the sterilization process effectively kills even highly resistant spores, thus confirming the adequacy of the sterilization cycle.