Endoscope Reprocessing Steps at a Glance
For a reusable flexible endoscope, the study sequence is point-of-use treatment, protected transport, leak testing and preparation, thorough cleaning, the required rinsing and inspection, disinfection or sterilization, then drying, storage and documentation. The exact procedure comes from the current instructions for that endoscope and its processing system.
This is a CER learning guide, not a substitute for device-specific training. It focuses on reusable flexible endoscopes; accessories and scopes used in sterile tissue may require a different processing pathway. Primary sources checked October 27, 2026.
| Stage | What to understand | Common study mistake |
|---|---|---|
| Point-of-use treatment | Prevent debris from drying and complete immediate treatment | Assuming it replaces thorough cleaning |
| Transport and preparation | Control contamination and identify the device | Choosing a process from appearance alone |
| Leak testing | Detect loss of integrity using the specified method | Continuing after a failed test |
| Cleaning and inspection | Reach required surfaces and channels; assess results | Treating a clean exterior as proof of clean channels |
| Disinfection or sterilization | Use the process appropriate to intended use and compatible instructions | Assuming all endoscopes need the same method |
| Rinsing, drying and storage | Remove residues and prevent contamination after processing | Treating a completed machine cycle as the whole workflow |
| Documentation | Connect the device, processing record and procedure | Leaving the scope’s identity unrecorded |
HSPA describes CER work as including testing, decontamination, inspection, disinfection and/or sterilization, transport and storage. Studying the reason for each stage is more useful than memorizing an unexplained list.
1. Start Treatment at the Point of Use
Initial treatment begins where the scope was used. Complete the specified immediate steps before soil dries, using the device-compatible materials and method. This prepares the device for subsequent cleaning; it does not make it ready for another patient.
If transport or cleaning is delayed, follow the endoscope manufacturer’s delayed-processing instructions and the facility’s escalation process. Do not assume a longer chemical exposure later compensates for omitted cleaning.
FDA’s reprocessing overview distinguishes initial treatment from thorough cleaning and the final disinfection or sterilization stage.
2. Transport, Identify and Prepare the Endoscope
Use the approved transport and containment procedure to protect personnel and separate contaminated devices from processed ones. Identify the scope model and obtain its current instructions, including requirements for detachable components and specialized channels.
Staff need training and PPE appropriate to the contamination and chemical exposure. Resolve conflicts between scope, chemistry and equipment instructions through the responsible team rather than combining incompatible directions.
A protective carrying case is not automatically an appropriate storage location for a processed scope. Use the intended transport and storage systems, not whichever container is convenient.
3. Perform the Required Leak Test
Leak testing checks the endoscope’s integrity. Its method, timing and connections must follow the applicable instructions. Do not apply one scope model’s test sequence to every other device.
A failed leak test is a stop-and-escalate finding. Remove the scope from clinical use and follow the manufacturer’s handling and repair directions. Do not proceed with routine immersion or processing as though the result passed. CDC’s endoscope recommendations, section 7, address leak testing and removal of failed devices from clinical use.
4. Clean Required Surfaces and Channels
Complete the specified disassembly, cleaning, brushing and flushing. Select the compatible detergent, correct preparation conditions and suitable channel-cleaning implements. An exterior wipe cannot establish that an internal channel has been cleaned.
Pay attention to channel design and detachable parts. A connector or brush that suits one model may not suit another. Complex features require their own instructions; do not infer access or cleanability from the outside appearance.
Cleaning removes material that can interfere with later processing. An automated endoscope reprocessor does not automatically replace every manual step. Confirm the validated cleaning requirements for the particular scope and system. See CDC’s cleaning guidance.
5. Rinse and Assess Cleaning Results
Complete required rinsing to remove loosened material and cleaning residues. Use the specified water quality and technique. Perform the required visual inspection or cleaning-verification checks before advancing.
Remaining soil requires the appropriate cleaning response, not immediate disinfection. Damage, an unresolved test failure or an incomplete required step also needs escalation. Record and address the problem rather than treating completion of a checklist as evidence that the device meets its requirements.
6. Use the Required Disinfection or Sterilization Process
The endoscope’s intended use and compatible validated instructions determine the process. Semicritical devices that contact mucous membranes generally require at least high-level disinfection after cleaning. Devices or accessories entering normally sterile tissue require a sterilization pathway; do not assume high-level disinfection is adequate for every scope or accessory.
For high-level disinfection, product-specific exposure conditions include time, temperature, concentration and contact with all required surfaces. A suitable concentration result does not compensate for inadequate exposure or a missed channel.
Where an Automated Endoscope Reprocessor Fits
Confirm compatibility between the scope and the AER. Use the specified connectors and channel connections, complete required manual steps, and evaluate the cycle result. Follow the failure procedure if the cycle is interrupted or unacceptable. Do not release a scope merely because the machine stopped running.
What an MEC Check Can Tell You
A minimum effective concentration check evaluates the reusable chemical solution under its specified testing conditions. It does not confirm device cleanliness or prove that a complete disinfection cycle occurred. Follow the chemical and test-system instructions for testing frequency, interpretation and documentation. A passing test does not extend the solution’s labeled reuse life.
CDC’s endoscope recommendations discuss compatibility, exposure, channel contact, solution checks and AER connections. Always reconcile general guidance with current product instructions and applicable standards.
7. Complete Post-Process Rinsing and Drying
Follow the required post-disinfection rinsing and drying steps. Rinsing removes chemical residues; drying addresses moisture remaining on surfaces and in channels. These steps have different purposes and neither should be assumed complete from the other.
Use the specified drying system, air quality, pressure and technique. There is no single drying time or alcohol-flush instruction suitable for every endoscope. Follow the current validated instructions and applicable facility requirements rather than applying a generic number of minutes to every model.
8. Store, Identify and Document the Processed Scope
Use a suitable storage system that protects the processed scope from damage and contamination. Follow the applicable requirements for orientation, detachable components, ventilation and handling. Do not assume every cabinet or every storage duration is acceptable for every scope.
The team must be able to distinguish processed devices from contaminated ones. Maintain the required traceability between the endoscope identifier, processing record and procedure. Protect patient information in those records. Missing documentation needs resolution through the facility’s process, not a guessed entry.
CER Practice Scenarios
The Leak Test Fails
Stop routine progression and follow the manufacturer’s failed-test handling and repair process. Do not select the answer that ignores the failure to meet a case schedule.
A Required AER Channel Connection Was Missed
An acceptable-looking exterior does not resolve the missing connection. Treat it as a process deviation and follow the investigation and reprocessing procedure.
The Solution Passes Its Concentration Test, but Exposure Was Too Short
The concentration result does not replace the required exposure. Identify the unmet condition and follow the failure procedure.
Connect the Workflow to Your CER Study
For scenario practice, try our CER practice test. Use the explanation to identify the stage involved and the requirement that makes an answer appropriate.
Our CER simulator study article covers how to organize practice sessions and review results. For a broader explanation of device risk categories, read Spaulding Classification Explained. You can also request the free CER quick-review guide for offline review.
Primary References
- HSPA: Certified Endoscope Reprocessor — the credential’s scope and candidate resources.
- FDA: How Reusable Medical Devices Are Reprocessed — the overall processing pathway and device-specific requirements.
- CDC: Recommendations for Disinfection and Sterilization — endoscope processing, particularly section 7.
- CDC: Cleaning — access to surfaces and channels before subsequent processing.