Use Of EIs In Vapour Phase Hydrogen Peroxide Decontamination Cycle Optimization And Rapid Validation

By Callum Dew, Scientist, Microbiology, New Modalities and Parenteral Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, United Kingdom Citation: Dew C. Use of EIs in Vapour Phase Hydrogen Peroxide Decontamination Cycle Optimisation and Rapid Validation. SVOA Microbiology 2023, 4:3, 60-70.

Biological Indicators (BIs) have long served as the baseline standard for validating gaseous hydrogen peroxide decontamination within cleanrooms and sterility testing isolators. However, the qualitative "growth/no growth" nature and inherent biological variance of traditional spore strips frequently lead to excessively long overkill cycles, maximizing equipment downtime and raising operating expenditures.

By integrating quantitative Enzyme Indicator (EI) technology alongside traditional biological validation, laboratories can accurately map decontamination efficacy and track real-time log reductions through bioluminescence assays. This dual-indicator methodology provides dense, highly reliable spatial mapping data across complex isolation chambers and packed validation loads. Consequently, teams can confidently isolate and prove out erroneous biological growth results caused by mechanical handling or airflow disruption. Transitioning to a data-driven validation framework facilitates precise cycle optimization, empowering facilities to safely slice gassing and aeration timelines in half while upholding the highest sterility assurance standards.

Download the full case study to review the complete cycle optimization data and validation methodologies.