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.
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.
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.