Biological indicators (BIs) are widely recognized as the most direct measure to monitor effectiveness of sterilization process monitoring because they directly challenge the process with highly resistant bacterial spores called Geobacillus stearothermophilus. When a BI demonstrates successful sterilization conditions, healthcare teams gain added confidence that the process achieved the intended lethality needed to support sterilization assurance and patient safety.

Current standards generally establish minimum monitoring frequencies. Every Load Monitoring goes beyond these minimum recommendations by including biological monitoring with every load, supporting consistent sterility assurance. See the table below for examples of how current standards and guidelines for load monitoring frequency vary. 

Requirements vary by sterilization method and applicable guidelines. Many facilities monitor monitor every implant load and selected loads, while Every Load Monitoring applies biological monitoring to every cycle to provide consistent verification for every load. We recommend all healthcare facilities adopt Every Load Monitoring processes to help increase confidence in their sterilization assurance practices.

If a sterilization failure occurs, facilities may need to investigate or recall loads back to the last documented negative BI result. Less frequent biological monitoring can increase uncertainty during infection investigations and make it more difficult to rule out sterile processing as a potential source. 

Solventum has been advancing sterilization assurance innovation for over 70 years, helping healthcare facilities improve confidence in their monitoring processes. Our latest biological indicators (BIs), chemical indicators (CIs), including those contained in our newest process challenge devices (PCDs), undergo rigorous testing and validation, including independent BSI Kitemark™ certification. 

Attest products are compatible with many commonly used sterilizers, helping facilities standardize sterilization assurance practices without being tied to a specific equipment manufacturer. It's all part of our commitment to never stop solving for healthcare professionals and the patients they serve. 

Chemical indicators (CIs) including Bowie-Dick tests, biological indicators (BIs), and some test packs can carry two very different marks of assurance. Understanding the difference helps your sterile processing department (SPD), infection prevention, and value-analysis teams choose products that have undergone independent third-party verification:  

• FDA 510(k) clearance is mandatory — a manufacturer cannot legally market a chemical indicator (CI), biological indicator (BI), or process challenge device (PCD/test pack) in the United States without it.  
• BSI Kitemark™ is voluntary — and is third-party verification that the manufacturer's ongoing production consistently meets the ISO performance standards. This annual testing is conducted annually at the manufacturer's facility by BSI Kitemark auditors and assessed against the relevant ISO standards.

Products that carry both FDA 510(k) clearance and BSI Kitemark certification give SPD teams confidence that the products perform consistently as stated by the manufacturer.

Many departments assume cost is the primary barrier. However, the cost of additional monitoring should be weighed against the potential impact of recalls, reprocessing, workflow disruptions, investigations and other corrective actions that may follow a sterilization concern. The broader costs associated including operational, financial and organizational considerations should be accounted into the overall risk evaluation.

The investment required to implement Every Load Monitoring is often lower than expected, when evaluated on a per-patient basis.

Many facilities find that standardizing one process for every load can simplify training, reduce practice variation, and help minimize opportunities for human error. In addition, ELM provides biological monitoring data for each load, helping to limit the scope of load recalls, supporting traceability, investigation activities and quality assurance processes if sterilization concerns occur.

Applying consistent sterility assurance principles across modalities including both steam and VH2O2 can support standardized monitoring practices. We recommend standardizing the processes by consistently using Attest^™ Clear Challenge Pack PCDs. 

We believe every patient deserves the same level of confidence in instrument sterility. Limiting biological monitoring to implant loads means not every patient receives the same level of sterility verification.

ELM helps provide documented verification of sterilization effectiveness for every monitored load, strengthening quality assurance and supporting infection prevention efforts.

Monitoring every load creates more complete sterilization documentation, which may help facilities assess whether sterile processing could be a contributing factor during an investigation. 

ELM helps ensure every patient receives the same level of sterilization monitoring rather than limiting this level of assurance to selected loads