Infection Control · single question
What type of test is the autoclave spore test (biological indicator)?
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Correct answer: D. Heat sterilization test (biological indicator)
- A. Mechanical monitoring uses gauges and printouts — not biological spore tests.
- B. Liquid chemical sterilization (cold sterilization) uses different monitoring methods.
- C. Chemical indicators change color based on temperature or chemical exposure — they are class 1-6 chemical monitors, not biological indicators.
- D. Correct. The autoclave spore test IS a biological indicator test using heat-resistant bacterial spores (Geobacillus stearothermophilus for steam autoclaves, Bacillus atrophaeus for dry heat/chemical vapor). If sterilization is adequate, the spores are killed. This is the GOLD STANDARD (most reliable) test for sterilization efficacy. It should be done WEEKLY.
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