Biological indicator (BI)
/baɪʌlɑdʒɪkʌl/ /ɪndʌkeɪtɝ/ /baɪ/
1. [noun] biological indicators are test systems containing viable microorganisms providing a defined resistance to a specific sterilization process. A biological indicator provides information on whether necessary conditions were met to kill a specified number of microorganisms for a given sterilization process, providing a level of confidence in the process. https://www.steris.com/healthcare/knowledge-center/sterile-processing/biological-indicators.cfm ; Accessed Mar 2 2019
Source: https://www.steris.com/healthcare/knowledge-center/sterile-processing/biological-indicators.cfm
2. [noun] “A biological indicator (BI) is a well-characterized preparation of a specific microorganism with a known resistance to a specific sterilization process.” To expand on this definition, a BI is essentially a microbiological test system. It is made up of a known viable population of a particular microorganism (bacterial spores) which is inoculated onto a carrier. A BI is ready for use, and provides a defined resistance to a specific sterilization process
Source: https://www.steris.com/healthcare/knowledge-center/sterile-processing/biological-indicators.cfm
Frequently Asked Questions
How do biological indicators help ensure that sterilization in foot care equipment is accurately achieved?
Biological indicators use a population of known bacterial spores to test the sterilization process, confirming that pedicure tools and other foot care instruments are processed in a way that minimizes microbial risks.
Why isn’t a simple visual inspection enough for verifying the cleanliness of foot care tools?
Visual checks cannot detect microscopic contaminants. Biological indicators provide a more reliable method by demonstrating that sterilization protocols successfully deactivate resilient bacteria, ensuring safe usage of foot care instruments.