The IAHCSMM Certified Medical Device Reprocessing Technician (CMDRT) certification validates your competency across the full sterile processing workflow — from point-of-use decontamination through sterilization, quality monitoring, and compliant distribution. Our free CMDRT practice test PDF gives you printable exam-style questions that mirror the depth and format of the real certification exam. Practice with the free CMDRT - Certified Medical Device Reprocessing Technician practice test on PracticeTestGeeks (11 questions with answer explanations).
The CMDRT exam covers five core domains: decontamination, inspection and assembly, sterilization, quality systems, and storage and distribution. Regulatory knowledge drawn from CDC guidelines, AAMI standards, and Joint Commission requirements is woven throughout all domains. This PDF will help you identify gaps and reinforce the knowledge you need to pass on your first attempt.
Facts verified Oct 15, 2026 against CSA Group. Dates that have passed are removed automatically.
| Item | Detail | Official source |
|---|---|---|
| Number of questions | Approximately 105 multiple-choice questions | CSA Group |
| Time limit | 180 minutes | CSA Group |
| Retake policy | Three attempts within eligibility period | CSA Group |
| Delivery | Testing centers or remote proctoring | CSA Group |
| Score release | Approximately two weeks | CSA Group |
Facts verified Oct 15, 2026 against CSA Group. Dates that have passed are removed automatically.
Interactive CMDRT - Certified Medical Device Reprocessing Technician resources on PracticeTestGeeks, free to start:
Decontamination is the first and most critical step in the reprocessing cycle. CMDRT exam questions test your knowledge of point-of-use treatment protocols, proper pre-cleaning and soaking procedures, manual scrubbing techniques for complex instrument geometries, and the operation of ultrasonic cleaners and automated washer-disinfectors. You must understand pH requirements for enzymatic detergents, water quality standards, and personal protective equipment requirements for decontamination staff.
Inspection and assembly questions require you to verify instrument functionality, identify defects that disqualify a device from use, select appropriate packaging materials (peel pouches, wrapped sets, rigid containers), apply correct labeling with lot control numbers and expiration dating, and manage traceability records. Understanding load configuration and weight limits is also tested.
Sterilization is a high-weight domain on the CMDRT exam. You must know the mechanism of action, cycle parameters, and appropriate applications for steam sterilization (gravity and pre-vacuum), ethylene oxide (ETO), hydrogen peroxide gas plasma, and dry heat. Questions cover minimum exposure times, temperature and pressure thresholds, and the required aeration time for ETO-sterilized items before patient use.
Quality systems questions focus on the hierarchy of sterilization monitoring: Class 1 through Class 6 chemical indicators, biological indicator organisms and incubation requirements, process challenge devices, and the criteria for load release or recall. You should understand what actions to take when a biological indicator test is positive and how to document a load recall correctly.
Storage and distribution questions address event-related versus time-related sterility, proper shelving conditions (temperature, humidity, traffic control), first-in first-out inventory management, and the procedures for handling items returned from patient care areas. Regulatory knowledge questions draw on CDC surgical site infection prevention guidelines, the AAMI ST79 comprehensive steam sterilization standard, and Joint Commission Environment of Care standards.
Print the PDF and work through each domain section under realistic conditions. Cover the answer explanations until you have committed to a response, then review the rationale carefully. Questions you answered correctly through guessing deserve as much review as the ones you missed — understanding the reasoning builds lasting retention.
Use the study checklist above to track your readiness across all five exam domains. For topics where you score below 75 percent, revisit the relevant AAMI or IAHCSMM reference material before your exam date. Candidates who combine structured practice testing with targeted review of weak areas consistently achieve higher first-attempt pass rates on the CMDRT certification exam.
Try these questions from our free CMDRT - Certified Medical Device Reprocessing Technician practice tests. The correct answer and an explanation follow each question.
A Medical Device Reprocessing Technician (MDRT) is preparing to manually clean a surgical instrument contaminated with blood and tissue. According to Routine Practices (Standard Precautions), what is the minimum Personal Protective Equipment (PPE) the technician must wear?
Answer: B. A fluid-resistant gown, eye protection, a surgical mask, and utility gloves.
Routine Practices require the use of appropriate PPE to protect against splashes and aerosol generation, which are significant risks during manual cleaning. This includes a fluid-resistant gown to protect clothing and skin, eye protection (goggles or face shield) to protect mucous membranes of the eyes, a mask to protect the nose and mouth, and heavy-duty utility gloves to prevent sharps injuries and exposure to contaminated fluids.
Why is continuing education important for certified medical device reprocessing technicians?
Answer: B. Technology, standards, and best practices in reprocessing evolve continuously, requiring ongoing education to maintain competency and certification
The field of medical device reprocessing evolves with new technologies, devices, chemicals, and updated standards. Continuing education ensures technicians remain current and competent, which is essential for patient safety and certification maintenance.
What is the primary responsibility of a medical device reprocessing technician?
Answer: B. Ensuring reusable medical devices are properly cleaned, disinfected or sterilized, and safe for patient use
The core responsibility of the CMDRT is to ensure that every reusable medical device undergoes the complete reprocessing cycle — from point-of-use pre-cleaning through final sterility verification — so that devices are safe when used on the next patient.
A medical device reprocessing technician is manually cleaning a set of stainless steel surgical instruments. Which of the following cleaning agents is most appropriate for breaking down protein-based soils like blood and tissue?
Answer: B. Protease-based enzymatic cleaner
Protease-based enzymatic cleaners are specifically designed to break down protein-based soils, such as blood and tissue, which are common on surgical instruments. Glutaraldehyde is a high-level disinfectant, alcohol is an antiseptic and disinfectant but not a primary cleaning agent for heavy soil, and saline can damage instruments and does not have cleaning properties.
Take the full CMDRT - Certified Medical Device Reprocessing Technician practice test