Autoclave Validation & Sterilization Verification Checklist [FREE PDF]

Autoclave validation is a critical requirement under CLIA 42 CFR 493.1252 and CAP Accreditation Standards to ensure sterilization efficacy in clinical and research laboratories. Routine performance verification using biological indicators, chemical integrators, and physical parameter monitoring is mandated to prevent contamination and ensure patient and personnel safety. Failure to maintain validated sterilization records can result in regulatory citations, accreditation loss, or laboratory clos

• Industry: Clinical Laboratory
• Frequency: Weekly
• Estimated Time: 30-45 minutes
• Role: Laboratory Manager
• Total Items: 36
• Compliance: CLIA 42 CFR 493.1252, CAP Accreditation Standards MIC.22640, ISO 17025:2017 Section 6.4, GLP 21 CFR 58.63, OSHA 29 CFR 1910.1030

Equipment Condition & Pre-Use Inspection

Verify physical condition and operational readiness of the autoclave before initiating any sterilization cycle.

• Is the autoclave chamber free from visible damage, corrosion, or debris?
• Are door gaskets and seals intact with no cracks or deformation?
• Is the drain strainer clean and unobstructed?
• Is the water reservoir filled to the manufacturer-specified level?
• Are all pressure gauges and display panels functioning and legible?

Sterilization Cycle Parameter Verification

Confirm that all programmed cycle parameters meet validated sterilization requirements before and during the run.

• Is the sterilization temperature set to the validated cycle requirement (121°C gravity / 134°C pre-vacuum)?
• Is the exposure time programmed per the validated load-specific protocol?
• Is the chamber pressure reaching and maintaining the specified PSI throughout the cycle?
• Is the correct cycle program selected for the load type (e.g., gravity, pre-vacuum, liquid)?
• Is the drying time programmed appropriately for the load contents?

Biological Indicator (BI) Testing

Verify the use and processing of biological indicators to confirm sterilization efficacy at the required frequency.

• Has a biological indicator (Geobacillus stearothermophilus spore strip) been included in this cycle?
• Was the BI placed in the most challenging location within the load (typically bottom front near drain)?
• Has the BI control (unprocessed indicator) been retained for comparison incubation?
• Is the BI incubator set to the correct temperature (56-60°C) for the required incubation period?
• Have previous BI results been documented and reviewed with no unresolved failures?

Chemical Indicator & Integrator Verification

Confirm the proper use of chemical indicators to provide immediate cycle-by-cycle process monitoring.

• Are Class 5 chemical integrators or Class 6 emulating indicators included in each load?
• Are Class 1 process indicators (autoclave tape) applied to the outside of each package?
• Did all chemical indicators show the expected color change after cycle completion?
• Are chemical indicators within their expiration date and stored per manufacturer specifications?
• Has a Bowie-Dick test been performed for pre-vacuum autoclaves today?

Load Preparation & Configuration

Ensure loads are properly prepared, packaged, and arranged to allow adequate steam penetration throughout the chamber.

• Are items properly cleaned and decontaminated prior to autoclaving?
• Are packages and containers arranged to allow free steam circulation (not stacked tightly or touching chamber walls)?
• Are liquid loads in appropriate containers with caps loosened or vented?
• Is the total load weight within the manufacturer-specified maximum capacity?
• Are biohazardous materials appropriately labeled and contained in autoclave-safe bags?

Cycle Documentation & Record Keeping

Verify that all cycle parameters, outcomes, and operator information are completely and accurately documented per regulatory requirements.

• Has the cycle printout or digital log been saved and attached to the sterilization record?
• Are operator name, date, time, cycle number, and load description recorded in the autoclave log?
• Are sterilization labels affixed to processed items with cycle date, expiry, and operator initials?
• Have any cycle aborts or alarm events been documented with corrective actions taken?
• Is the autoclave maintenance and calibration log current and accessible?

Post-Cycle Verification & Release

Confirm cycle completion indicators and authorize release of sterilized materials for use.

• Did the autoclave reach complete pressure equilibration before door opening?
• Are sterilized items free from moisture, tears, or breaches in packaging upon unloading?
• Have all processed items been moved to a clean, dry, designated sterile storage area?
• Has the autoclave chamber been left clean, dry, and in ready-for-next-use condition?
• Are any corrective actions or follow-up items noted and assigned to responsible personnel?
• Please provide any additional observations or notes from this autoclave validation check.

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Why Use This Autoclave Validation & Sterilization Verification Checklist [FREE PDF]?

This autoclave validation & sterilization verification checklist [free pdf] helps clinical laboratory teams maintain compliance and operational excellence. Designed for laboratory manager professionals, this checklist covers 36 critical inspection points across 7 sections. Recommended frequency: weekly.

Ensures compliance with CLIA 42 CFR 493.1252, CAP Accreditation Standards MIC.22640, ISO 17025:2017 Section 6.4, GLP 21 CFR 58.63, OSHA 29 CFR 1910.1030. Regulatory-aligned for audit readiness and inspection documentation.

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