- What Is Prometric and Why Does It Matter for CER?
- Before You Schedule: Eligibility and Application
- Step-by-Step: How to Schedule Your CER Exam
- What to Expect on Exam Day: Format and Structure
- The Seven CER Domains and How They Appear on the Test
- A Domain-Driven Prep Timeline
- Rescheduling, Cancellation, and Retake Policies
- After You Pass: Annual Renewal Requirements
- Frequently Asked Questions
- The CER exam is administered by HSPA through Prometric Testing Centers; the exam fee is $140 USD.
- You need only 3 months of documented hands-on endoscope reprocessing experience to be eligible - no CRCST required.
- The exam contains 150 questions (125 scored, 25 unscored) and must be completed in 3 hours.
- Domain 4 - Endoscope Processing Steps - carries the largest weight at 32%; prioritize it in your preparation.
What Is Prometric and Why Does It Matter for CER?
Prometric is one of the largest computer-based testing networks in the world, operating thousands of secure testing centers across the United States and internationally. The Healthcare Sterile Processing Association (HSPA) has contracted with Prometric to deliver the Certified Endoscope Reprocessor (CER) exam, which means every aspect of your scheduling experience - from seat selection to day-of check-in - runs through Prometric's platform rather than directly through HSPA.
Understanding this distinction matters because candidates often search for scheduling links on the HSPA website and then get confused when they are redirected. Once HSPA approves your application, you will receive an Authorization to Test (ATT) letter that contains a Prometric eligibility ID. That ID is the key to booking your seat. Without it, you cannot access the scheduling portal.
Before You Schedule: Eligibility and Application
Scheduling your Prometric appointment is the last step in a short but important sequence. Before you open the Prometric portal, you must satisfy HSPA's eligibility requirements and submit your application. For a complete breakdown of documentation requirements, visit the full guide on CER Exam Prerequisites and Eligibility Requirements 2026.
The Core Prerequisite
The CER has a single primary prerequisite: three months of documented, hands-on endoscope reprocessing experience. This means time spent in a clinical or healthcare setting performing actual reprocessing tasks - manual cleaning, high-level disinfection, automated reprocessor operation, and related workflows. Unlike some other HSPA credentials, the CER does not require you to hold a CRCST first. If endoscope reprocessing is your entry point into sterile processing, you can pursue this credential directly.
Your employer will typically provide a signed attestation of your experience. Gather that documentation before you begin the HSPA application, because your application cannot be reviewed without it.
The $140 Exam Fee
HSPA charges a $140 USD exam fee at the time of application. This fee covers your eligibility determination and grants you access to the Prometric scheduling system once approved. Keep your payment confirmation, as you may need it if any issues arise with your ATT letter. Budget for this cost in advance, and note that retake fees apply if you need to test again.
Key Takeaway
Submit your HSPA application - including employer attestation of your 3 months of reprocessing experience - before attempting to schedule at Prometric. Your ATT letter is the gating document for booking a seat.
Step-by-Step: How to Schedule Your CER Exam
Once HSPA sends your ATT letter, follow these steps to secure your exam date:
- Locate your eligibility ID. Your ATT letter from HSPA will include a Prometric candidate ID or eligibility code. Copy this exactly as written - even a single character error will prevent you from finding your exam in the system.
- Go to prometric.com. Navigate to the "Schedule My Test" section. Search for the HSPA CER exam using either the sponsor code or by searching "Healthcare Sterile Processing Association" in the sponsor field.
- Create or log into your Prometric account. If you have tested with Prometric for another credential, use the same account. This keeps all your testing history in one place.
- Search for available test centers and dates. Enter your zip code or city to find nearby Prometric locations. The system will display available appointment slots. Testing is computer-based at a Prometric center; there is no remote proctored (at-home) option for the CER.
- Select your appointment and confirm. Choose a date that gives you adequate preparation time. After confirming, Prometric will send an email confirmation. Save this - it contains your appointment number, test center address, and check-in instructions.
- Review Prometric's ID requirements. You will need a government-issued photo ID whose name matches exactly what appears on your application. A mismatch can result in being turned away on test day.
What to Expect on Exam Day: Format and Structure
Knowing exactly what the exam looks like reduces test-day anxiety and helps you allocate your three hours wisely.
| Exam Feature | CER Detail |
|---|---|
| Total Questions | 150 multiple-choice questions |
| Scored Questions | 125 |
| Unscored (Pretest) Questions | 25 |
| Time Allowed | 3 hours |
| Question Format | Computer-based multiple-choice |
| Reference Materials | Closed book - none permitted |
| Scoring Method | Criterion-referenced (Angoff/Beuk) - no public numeric cut score |
| Tutorial | Available before exam begins |
| Review Tools | Built-in flagging and review screen |
| Exam Fee | $140 USD |
The Unscored Questions - What They Mean
Twenty-five of your 150 questions are unscored pretest items that HSPA uses to evaluate potential future questions for validity and difficulty. Critically, you will not know which 25 are unscored. This means every question demands your full attention. A question that feels obscure or unusually difficult may be an unscored pretest item - but it may also be one of your 125 scored questions. Answer every question as if it counts.
Criterion-Referenced Scoring
The CER uses the Angoff/Beuk method to establish its pass/fail threshold. This is a criterion-referenced approach, meaning your result is compared against a defined standard of competency - not against other test-takers. HSPA does not publish a specific numeric cut score, so candidates should focus on achieving broad, deep competency across all seven domains rather than trying to calculate a target number of correct answers.
The Seven CER Domains and How They Appear on the Test
The CER exam tests knowledge across seven content domains derived from the May 2022 content outline. Understanding how each domain is weighted helps you allocate study time proportionally. You can also practice domain-specific questions at the CER Exam Prep practice test site to identify your personal weak areas before test day.
Domain 4: Endoscope Processing Steps (32%)
This is the largest single domain and will account for roughly one-third of your scored questions. Candidates must master the complete reprocessing workflow as defined by device manufacturers and regulatory guidelines.
- Pre-cleaning at the point of use and transport protocols
- Manual cleaning techniques, leak testing, and inspection
- High-level disinfection (HLD) and sterilization principles
- Automated endoscope reprocessor (AER) operation and monitoring
- Drying, storage, and release for clinical use
Domain 5: Endoscope Handling, Transport and Storage (16%)
The second-largest domain covers the lifecycle of an endoscope outside of the reprocessing room - from bedside to storage cabinet and back.
- Safe transport containers and contamination prevention
- Hang time and storage environment requirements
- Scope retrieval procedures that maintain HLD status
Domain 1: Microbiology and Infection Control (12%) & Domain 3: Work Area Design (12%)
These two domains each account for 12% of scored questions. Microbiology questions test your understanding of biofilm formation, spore resistance, disinfectant mechanisms, and HAI prevention. Work Area Design questions address physical separation of soiled and clean zones, ventilation requirements, and PPE protocols.
- Microbial classifications and their resistance to disinfection
- Biofilm management on flexible endoscopes
- AIIR and negative-pressure room requirements
- Sink design, counter placement, and workflow traffic patterns
Domains 2, 6, and 7: Design, Tracking, and Human Factors (10% / 10% / 8%)
Domain 2 (Endoscope Purpose, Design and Structure) requires knowledge of endoscope types, channel anatomy, and how design affects cleanability. Domain 6 (Endoscope Tracking, Repair and System Maintenance) covers documentation systems, repair indicators, and recall management. Domain 7 (Human Factors) addresses how fatigue, ergonomics, and communication failures introduce reprocessing errors.
- Flexible vs. rigid endoscope channel differences
- Tracking software requirements and scope traceability
- Human error categories and mitigation strategies in reprocessing
Use our CER practice tests to simulate real exam conditions for all seven domains and track your progress by category.
A Domain-Driven Prep Timeline
Generic study advice only goes so far. Below is a four-week structure built specifically around the CER's domain weights. If you have more time before your Prometric date, expand Weeks 1 and 2 - the two heaviest domains deserve additional attention.
Domain 4 - Endoscope Processing Steps (32%)
- Map the full reprocessing workflow step by step and write it from memory
- Review your facility's SOPs and compare them against HSPA guidelines
- Complete at least two timed practice sets focused on processing sequence questions
- Study AER cycle parameters and chemical indicators in depth
Domains 5, 1, and 3 - Handling/Storage, Microbiology, Work Area (16% + 12% + 12%)
- Review hang-time guidelines and storage cabinet air requirements
- Study biofilm formation, Spaulding classification, and disinfectant mechanisms
- Sketch a compliant reprocessing room layout from memory, noting air exchange and zone separation
- Take a mixed-domain practice test to identify gaps across these three areas
Domains 2, 6, and 7 - Design, Tracking, Human Factors (10% + 10% + 8%)
- Study flexible endoscope channel anatomy using manufacturer diagrams
- Review scope traceability documentation requirements and recall scenarios
- Explore human factors case studies: latent errors, communication breakdowns in reprocessing suites
- Complete a full 150-question timed practice exam and review every missed item
Full Simulation and Weak Area Remediation
- Take two to three complete timed practice exams under Prometric-like conditions (no notes, 3-hour timer)
- Revisit any domain scoring below your target threshold - especially Domain 4
- Review your Prometric confirmation, plan your route to the test center, and gather your ID
- Avoid heavy studying the day before; focus on rest and a brief review of processing steps
Rescheduling, Cancellation, and Retake Policies
Life in an endoscopy unit or sterile processing department is unpredictable. Understanding Prometric's rescheduling rules before you book protects you from unnecessary fees or forfeiture of your exam eligibility.
Prometric generally allows candidates to reschedule or cancel appointments without penalty if done within a defined window - typically at least 72 hours before the scheduled exam time. Changes made within that window may incur a fee. If you fail to appear without prior cancellation (a "no-show"), you may forfeit your exam fee and need to reapply through HSPA. Always manage appointment changes through Prometric directly rather than contacting HSPA, as HSPA does not control test center calendars.
If you do not pass on your first attempt, you will need to reapply to HSPA and pay the $140 exam fee again before scheduling another Prometric appointment. There is no same-day retake option. Use the waiting period productively: return to the domains where your performance felt weakest and use targeted practice to rebuild confidence before your next attempt. More scheduling details are available in the guide on How to Schedule Your CER Exam at Prometric 2026.
After You Pass: Annual Renewal Requirements
Passing the CER earns you a credential that recognizes demonstrated competency in endoscope reprocessing - a specialty valued by hospitals, ambulatory surgery centers, and GI procedure suites that perform flexible endoscopy. Employers in these settings increasingly require or strongly prefer the CER as evidence that their reprocessing personnel meet current standards for infection prevention.
The CER is not a one-time credential. It renews annually and requires two things: 6 CE credits specifically in endoscope reprocessing and payment of the HSPA renewal fee. These CE credits must be directly relevant to endoscope reprocessing - general sterile processing CE credits do not automatically satisfy this requirement. Plan your CE calendar from the moment you pass, and don't wait until the final weeks of your renewal cycle to locate qualifying education. HSPA, professional conferences, and accredited online providers offer CER-specific CE opportunities throughout the year.
Staying current also means staying competitive. The field of endoscope reprocessing continues to evolve as new scope designs, automated reprocessors, and infection prevention guidelines emerge. Your annual CE requirement keeps your knowledge aligned with current best practices - not just the content outline as it existed when you first tested.
Frequently Asked Questions
No. You must submit your application to HSPA and pay the $140 exam fee before Prometric will allow you to schedule. HSPA will send you an Authorization to Test letter containing a Prometric eligibility ID, which is required to access the scheduling system.
No. The CER has its own standalone prerequisite: 3 months of documented, hands-on endoscope reprocessing experience. You do not need to hold a CRCST or any other HSPA credential first. See the full details in the article on CER Exam Prerequisites and Eligibility Requirements 2026.
You won't. The 25 unscored pretest questions are embedded throughout the exam and are indistinguishable from the 125 scored questions. The only safe strategy is to treat every single question as if it contributes to your final result.
You will need a valid, government-issued photo ID (such as a driver's license or passport) whose name matches exactly what appears on your HSPA application. A name mismatch - even a middle name or suffix discrepancy - can result in being denied entry. Check your application and your ID before you leave for the testing center.
CER renewal requires 6 CE credits specifically in endoscope reprocessing, plus payment of the HSPA renewal fee. Credits must be directly relevant to endoscope reprocessing - plan your continuing education throughout the year rather than scrambling at renewal time.